"Hiroki OTA,Toshihiro ASAHI,Gu XIAODONG,T. Sakaguchi,F. Koyama","Integrated devices of MEMS VCSEL and DBR beam deflector","24th MICROOPTICS CONFERENCE",,,"  E-4",,,2019,Nov.
"Keisuke Shimura,Masashi Takanohashi,Zeuku Ho,Xiaodong Gu,Takahiro Sakaguchi,Akihiro Matsutani,FUMIO KOYAMA","980nm-band Beam Scanner Integrated with Heater-driven VCSEL","The 80th JSAP Autumn  Meeting, 2019","第80回応用物理学会秋季学術講演会 講演予稿集 (2019 北海道大学 札幌キャンパス)",,"  20a-E207-1",,,2019,Sept.
"Hiroki Ota,Xiaodong Gu,Takahiro Sakaguchi,FUMIO KOYAMA","Integrated devices of MEM VCSEL and VCSEL beam deflector","The 80th JSAP Autumn  Meeting, 2019","第80回応用物理学会秋季学術講演会 講演予稿集",,"  20p-E204-7",,,2019,Sept.
"Masashi Takanohashi,Keisuke Shimura,Xiaodong Gu,Masanori Nakahama,Akihiro Matsutani,Takahiro Sakaguchi,FUMIO KOYAMA","Lateral coupling integration of VCSEL and beam scanner with controlled cutoffwavelength structure","The 80th JSAP Autumn  Meeting, 2019","第80回応用物理学会秋季学術講演会 講演予稿集",,"  20p-E204-6",,,2019,Sept.
"Toshihiro Asahi,Xiaodong Gu,Takahiro Sakaguchi,Fumio Koyama","Beam deflection characteristics of MEMS VCSEL integrated DBR waveguide scanner","The 66th JSAP Spring Meeting",,,"  12p-W611-7",,"  03-652",2019,Mar.
"Masashi Takanohashi,Keisuke Shimura,Xiaodong Gu,Masanori Nakahama,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Lateral coupling integration of VCSEL and VCSEL amplifier with cutoff structure","The 79th JSAP Spring Meeting",,,"  12p-W611-2",,"  03-646",2019,Mar.
"Keisuke Shimura,Masashi Takanohashi,Zeuku Ho,Xiaodong Gu,Masanori Nakahama,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Beam Scanner Integrated Single-mode VCSEL with Cut-off Wavelength Detuning","The 66th JSAP Spring Meeting",,,"  12p-W611-5",,"  03-649",2019,Mar.
"Ryosuke Togashi,Xiaodong Gu,Takahiro Sakaguchi,Fumio Koyama","Full C-band Wavelength Demultiplexer with Optical Gain for Use in Wavelength Selective Switch","Optical Fiber Communication Conference and Exhibition 2019",,,"  W3A.5",,,2019,Mar.
"Ryosuke Togashi,Xiaodong Gu,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","InP VCSEL Demultiplexer with Loss Compensation in Full C-band","The 66th JSAP Spring Meeting",,,"  12p-W611-8",,"  03-653",2019,Mar.
"Xiaodong Gu,Ryosuke Togashi,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","First Demonstration of C-band Wavelength Demultiplexer Based on a Bragg Reflector Waveguide Amplifier Using InP Material","Asia Communications and Photonics Conference 2018",,,"  Su4F.3",,,2018,Oct.
"Keisuke Shimura,Masashi Takanohashi,Zeuku Ho,Xiaodong Gu,Masanori Nakahama,Takahiro Sakaguchi,Akihiro Matsutani,FUMIO KOYAMA","Beam Scanner Integrated VCSEL with Cut-off Wavelength Detuning","The 79th JSAP Autumn Meeting",,,"  19a-225B-4",,,2018,Sept.
"Masashi Takanohashi,Keisuke Shimura,Xiaodong Gu,Masanori Nakahama,Akihiro Matsutani,Takahiro Sakaguchi,FUMIO KOYAMA","High efficient lateral coupling integration of VCSEL and slow-light amplifier","The 79th JSAP Autumn Meeting",,,"  19a-225B-5",,,2018,Sept.
"Ryosuke Togashi,Xiaodong Gu,Akihiro Matsutani,Takahiro Sakaguchi,Junichi Shimizu,FUMIO KOYAMA","1.5μm band slow light demultiplexer based on InP Bragg reflector waveguide","IEICE Society Conference 2018",,,,,,2018,Sept.
"Shunya Inoue,Shun Nishimura,Masanori Nakahama,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","High-speed wavelength switching of tunable MEMS vertical cavity surface emitting laser by ringing suppression",,"Japanese Journal of Applied Physics",,"Vol. 57",,"pp. 040308-1-4",2018,Mar.
"Shunya Inoue,Toshihiro Asahi,Shun Nishimura,Masanori Nakahama,Akihiro Matsutani,Takahiro Sakaguchi,FUMIO KOYAMA","Fabrication of slow-light beam scanner integrated with a MEMS VCSEL","第65回 応用物理学会 春季学術講演会",,,"  18a-B203-7",,,2018,Mar.
"Shunya Inoue,Shun Nishimura,Masanori Nakahama,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Ringing Suppression of MEMS VCSEL by Optimizing Applied Voltage Wave Form","The 78th JSAP Autumn Meeting",,,"  6p-C14-4",,,2017,Sept.
"Shun Nishimura,Masanori Nakahama,Shunya Inoue,Akihiro Matsutani,Takahiro Sakaguchi,FUMIO KOYAMA","機械的共振を用いた波長可変マイクロマシン面発光レーザの広帯域掃引・低駆動電圧動作","電子情報通信学会研究会",,,,,,2017,Sept.
"Shun Nishimura,Masanori Nakahama,Shunya Inoue,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Wide Wavelength Sweep & Low Voltage Operation of Tunable MEMSVCSEL Employing Mechanical Resonance","電子情報通信学会研究会","OPE2017-55,LQE2017-28(2017-08)",,"vol. 117","no. 195","pp. 37-40",2017,Sept.
"Ryosuke Togashi,Takuma Ikeda,Xiaodong Gu,Takahiro Sakaguchi,FUMIO KOYAMA","1.5μm band slow light demultiplexer based on InP Bragg reflector waveguide","The 78th JSAP Autumn Meeting",,,"  6p-C14-11",,,2017,Sept.
"Shun Nishimura,Masanori Nakahama,Takahiro Sakaguchi,Akihiro Matsutani,FUMIO KOYAMA","High speed wavelength tuning of MEMS VCSEL","The 78th JSAP Autumn Meeting",,,"  6p-C14-5",,,2017,Sept.
"Masanori Nakahama,Shunya Inoue,Shun Nishimura,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Sub-volt Wavelength Sweep Operation Of MEMS VCSEL Employing High-Q Mechanical Resonanc","The 12th Conference on Lasers and Electro-Optics Pacific Rim",,,"  2-1N-5",,,2017,Aug.
"Shun Nishimura,Xiaodohg Gu,Masanori Nakahama,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","High speed electro-thermal wavelength tuning of 1060nm VCSEL","第64回応用物理学会春季学術講演会",,,"  15p-422-6",,,2017,Mar.
"Masanori Nakahama,Shunya Inoue,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Wide Wavelength Sweep & Low Voltage Operation of MEMS Tunable VCSEL Employing Mechanical Resonance","第64回応用物理学会春季学術講演会",,,"  15p-422-5",,,2017,Mar.
"Masanori Nakahama,Xiaodong Gu,Akihiro Matsutani,Takahiro Sakaguchi,FUMIO KOYAMA","Amplification characteristics of VCSEL-Based High Resolution Wavelength Demultiplexer","The 77th JSAP Autumn Meeting,2016",,,"  16p-A35-6",,"pp. 03-469",2016,Sept.
"Masanori Nakahama,Xiaodong Gu,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","VCSEL-Based High Resolution Wavelength Demultiplexer with Large Optical Gain","25th International Semiconductor Laser Conference, ISLC 2016",,,"  TuD5",,,2016,Sept.
"Shunya Inoue,Masanori Nakahama,Akihiro Matsutani,Takahiro Sakaguchi,FUMIO KOYAMA","Fabrication of HCG MEMS VCSELs and characterization for athermal operation","IEICE Society Conference 2016",,,"  C-4-23",,"pp. 1-175",2016,Sept.
"Shunya Inoue,Masanori Nakahama,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Consideration and Fabrication of athermal HCG MEMS VCSEL","International Nano-Optolectronics Workshop, iNOW2016",,,"  Poster Session-7",,,2016,July
"Shunya Inoue,Masanori Nakahama,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Fabrication of HCG MEMS VCSELs using nanoimprint lithography and consideration of athermal operation","21st. Optoelectronics and Communications Conference (OECC/PS2016)",,,"  MD2-3",,,2016,July
"Masanori Nakahama,Xiaodong Gu,Akihiro Matsutan,Takahiro Sakaguchi,Fumio Koyama","Slow Light VCSEL Amplifier for High-resolution Beam Steering and High-power Operations","Conference on Lasers and Electro-Optics 2016 (CLEO2016)",,,"  SF1L.5",,,2016,June
"Masanori Nakahama,Xiaodong Gu,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Amplification characteristics of the slow light SOA for boosting single-mode power of VCSEL","The 63rd JSAP Spring Meeting2016",,,,,"  20a-S321-7",2016,Mar.
"Shunya Inoue,Masanori Nakahama,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Fabrication of Athermal HCG MEMS tunable VCSEL","The 63rd JSAP Spring Meeting2016",,,,,"  20a-S321-9",2016,Mar.
"Masanori Nakahama,Xiaodong Gu,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","High-power Solid State Beam Scanner based on VCSEL Structure","The 63rd JSAP Spring Meeting2016",,,,,"  20a-S321-8",2016,Mar.
"Hideaki Yamakawa,Takahiro Sakaguchi,Moustafa Ahmed,Ahmed Bakry,Fumio Koyama","Spatial-mode multiplexer/demultiplexer based on tapered hollow waveguide with lateral optical confinement",,"Japanese Journal of Applied Physics",,"Vol. 54",,"pp. 120302-1-3",2015,Dec.
"Masanori Nakahama,Xiaodong Gu,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Sub-gigahertz beam switching with transverse-mode coupled cavity VCSELs","20th Microoptics Conference 2015",,,"  J2",,"pp. 280-281",2015,Oct.
"Masanori Nakahama,Xiaodong Gu,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Transverse-mode coupled cavity VCSELs with high speed beam switching","The 76th JSAP Autumn Meeting 2015, Nagoya",,,"  16a-2E-8",,,2015,Sept.
"Toshihiro Oyama,Xiaodong Gu,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","1.5μm band Si/SiO2 Bragg reflector waveguide for beam steering / wavelength selective switch","Proceedings of the 2015 IEICE Society Conference",,,"  C-3-15",,,2015,Sept.
"Masanori Nakahama,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Athermal and tunable vertical cavity surface emitting lasers","Proceedings of the 2015 IEICE Society Conference",,,"  C-4-8",,,2015,Sept.
"Masanori Nakahama,Xiaodong Gu,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Transverse-mode Coupled cavity VCSELs with High Speed Beam Switching","International Nano-Optoelectronics Workshop",,,"  ThP1",,"pp. 119-120",2015,Aug.
"Masanori Nakahama,Xiaodong Gu,Takahiro Sakaguchi,Akihiro Matsutani,Moustafa Ahmed,Ahmed Bakry,Fumio Koyama","Sub-gigahertz beam switching of vertical-cavity surface-emitting laser with transverse coupled cavity",,"Applied Physics Letters",,"Vol. 107","No. 7","pp. 071105-1-4",2015,Aug.
"Masanori Nakahama,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Precise Wavelength Tuning of MEMS VCSELs enabling 110-ch Operations","The 11th Conference on Lasers and Electro-Optics Rim",,,"  26J3-5",,,2015,Aug.
"Masanori Nakahama,Takahiro Sakaguchi,Akihiro Matsutani,FUMIO KOYAMA","Athermal and Tunable Operation of VCSELs with Micromachined Structure",,"レーザー研究 2015年７月","一般社団時法人 レーザー学会","Vol. 43","No. 7","pp. 458-462",2015,July
"Masanori Nakahama,Hiroki Kobayashi,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Transverse-mode Control of Transverse-coupled Cavity VCSELs using Vernier Effect for Boosting Single-mode Power","Compound Semiconductor Week 2015, CSW2015",,,"  Tu405.4",,"pp. 346-347",2015,July
"Hiroki Taniguchi,Hamed Dalir,Takahiro Sakaguchi,Fumio Koyama","High speed modulation of laterally-coupled-cavity edge emitting lasers II","2015 IEICE General Conference",,,"  C-4-8",,,2015,Mar.
"Masanori Nakahama,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Athermal Tunable VCSEL with Thermally- and Electrostatically-actuated Micromachined Mirror","電子情報通信学会 LQE2014",,,"vol. 114","no. 378","pp. 27-30",2014,Dec.
"Masanori Nakahama,Takahiro Sakaguchi,akihiro matsutani,Fumio Koyama","Athermalization and on-chip multi-wavelength integration of VCSELs employing thermally actuated micromachined mirrors",,"Applied Physics Letters(APL)",,"vol. 105","no. 091110 (2014)","pp. 091110-1-4",2014,Sept.
"Masanori Nakahama,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Athermal multi-wavelength VCSEL array employing thermally actuated micromachined mirrors","IEEE International Semiconductor Laser Conference",,,"  WB5",,,2014,Sept.
"Masanori Nakahama,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Athermal and tunable VCSEL with thermally and electro-statically actuated MEMS mirro","IEICE Society Conference 2014",,,"  C-4-22",,,2014,Sept.
"Masanori Nakahama,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Athermal and widely tunable VCSEL with bimorph micromachined mirror",,"Optics Express",,"Vol. 22","no. 18","pp. 21471-21479",2014,Aug.
"Masanori Nakahama,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Athermal and Widely Tunable VCSEL with Bimorph Micromachined Mirror","OECC 2014","OECC 2014",,"vol. 22","no. 18","pp. 37-39",2014,July
"Hideaki Yamakawa,Takahiro Sakaguchi,Fumio Koyama","Vertical Emission Lasers with Hollow Waveguide","IEICE General Conference 2014",,,"  C-4-15",,,2014,Mar.
"Masanori Nakahama,Shunya Inoue,Hirokazu Sumimoto,Shouhei Moriwaki,Takahiro Sakaguchi,akihiro matsutani,FUMIO KOYAMA","Threshold reduction of athermal and tunable micromachined VCSEL","IEICE General Conference 2014",,,"  C-4-26",,,2014,Mar.
"Masanori Nakahama,Hayato Sano,Shunya Inoue,Takahiro Sakaguchi,Akihiro Matsutani,Moustafa Ahmed,Ahmed Bakry,Fumio Koyama","Wavelength tuning and controlled temperature dependence in vertical-cavity surface-emitting lasers with a thermally and electrostatically actuated cantilever structure",,"Jpn. J. Appl. Phys.",,"vol. 53","no. 1","pp. 010303-1-3",2013,Dec.
"中濱 正統,佐野 勇人,Takahiro Sakaguchi,Akihiro Matsutani,小山 二三夫","マイクロマシンを用いたアサーマル面発光レーザの波長掃引特性 (レーザ・量子エレクトロニクス)",,"電子情報通信学会技術研究報告 = IEICE technical report : 信学技報","一般社団法人電子情報通信学会","Vol. 113","No. 352","pp. 11-14",2013,Dec.
"Hideaki Yamakawa,Masanori Sadamitsu,Takahiro Sakaguchi,Fumio Koyama","Spatial mode multiplexer/demultiplexer based on tapered hollow waveguide with lateral optical confinement structure","18th Microoptics Conference (MOC’13)",,,"  H9",,,2013,Oct.
"Masanori Nakahama,Hayato Sano,Shunya Inoue,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Wavelength tuning and controlled temperature dependence of MEMS VCSELs with thermally and electrostatically actuated micromachined mirror","18th Microoptics Conference (MOC’13)",,,"  C3",,,2013,Oct.
"Masanori Nakahama,Hayato Sano,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Wavelength tuning characteristics of athermal VCSELs with thermally actuated MEMS structure II","The 74th Autumn Meeting 2013",,,"  16p-A8-7","no. 05","p. 046",2013,Sept.
"Hideaki Yamakawa,Masanori Sadamitsu,Takahiro Sakaguchi,Fumio Koyama","Spatial Mode Division Multiplexer/Demultiplexer Based on Tapered Hollow Waveguide with Lateral Optical Confinement Structure","2013年電子情報通信学会エレクトロニクスソサエティ大会",,,"  C-3-62",,"p. 184",2013,Sept.
"Masanori Nakahama,Hayato Sano,Shunya Inoue,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Electro-thermally Tunable 850nm VCSELs with metal/semiconductor Thermally Actuated Mirror","2013 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR",,,"  MK2-2",,,2013,July
"Hideaki Yamakawa,Takahiro Sakaguchi,Fumio Koyama","Wavelength Tuning of Hollow Waveguide DBR Lasers","2013 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR",,,"  MK2-1",,,2013,July
"Masanori Nakahama,Hayato Sano,Shunya Inoue,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Tuning Characteristics of Monolithic MEMS VCSELs with Oxide Anti-reflection Layer",,"IEEE Photonics Technology letters",,"vol. 25","no. 18","pp. 1747-1750",2013,July
"Masanori Nakahama,Hayato Sano,Shunya Inoue,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Tuning Characteristics of Tunable MEMS VCSELs with AR layer","IEICE General Conference 2013",,,"  C-4-11",,"  256",2013,Mar.
"Hideaki Yamakawa,Takahiro Sakaguchi,Fumio Koyama","Wavelength Tuning of Hollow Waveguide DBR Lasers","IEICE General Conference 2013",,,"  C-4-4",,"  249",2013,Mar.
"Masanori Nakahama,Hayato Sano,Shunya Inoue,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Giant wavelength-temperature dependence of 850nm VCSELs with a metal/semiconductor thermally actuated mirror","Vertical-Cavity Surface-Emitting Lasers XVII,Photonics West 2013",,,"  8639-14",,,2013,Feb.
"Junichi Kashino,Hayato Sano,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Modeling and fabrication of angular dependent Si high-contrast grating mirror for transverse mode control of VCSELs","Photonics West 2013",,,"  8633-33","  S10",,2013,Feb.
"Hideaki Yamakawa,Takahiro Sakaguchi,Fumio Koyama","Mode Selectivity and Athermal Operation for Hollow Waveguide DBR Lasers",,"THE IEICE TRANSACTIONS ON ELECTRONICS (JAPANESE EDITON)","THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS","Vol. J96-C","No. 2","pp. 17-23",2013,Feb.
"Hideaki Yamakawa,Tomohiro Akutsu,Takahiro Sakaguchi,Fumio Koyama","Hollow waveguide DBR Lasers with 2D optical confinement structure toward athermal and narrow linewidth operation","レーザ・量子エレクトロニクス研究会(LQE)","電子情報通信学会信学技報",,"vol. 112","no. 356","pp. 47-50",2012,Dec.
"Hideaki Yamakawa,Tomohiro Akutsu,Takahiro Sakaguchi,Fumio Koyama","Hollow Waveguide DBR Lasers with Novel 2D Optical Confinement Toward Athermal and Narrow Linewidth Operations","23rd IEEE International Semiconductor Laser Conference. ISLC2012",,,"  TuA7",,"pp. 48-49",2012,Oct.
"Masanori Nakahama,Hayato Sano,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Fabrication of MEMS VCSELs by a release process with suppressed stiction","The 73rd JSAP Autumn Meeting 2012",,,"  12a-PA5-3",,"  22-003",2012,Sept.
"Masanori NAKAHAMA,Hayato SANO,Toshikazu SHIMADA,Xiaodong Gu,Takahiro SAKAGUCHI,Akihiro MATSUTANI,Fumio KOYAMA","Lateral Integration of Tunable MEMS VCSEL and Slow Light Amplifier","IEICE LQE2012","IEICE LQE2012-37",,"vol. 112","no. 183","pp. 61-66",2012,Aug.
"Hiroshi Takanashi,Tomoyuki Kato,Akihiro Matsutani,Takahiro Sakaguchi,Kohroh Kobayashi,Hiroyuki Uenohara","Investigation of Optimized Condition of a Passively Mode-Locked VCSEL with Double-Path Resonance Configuration","16th Opto-Electronics and Communications Conference (OECC2011),",,,,,"pp. 269-270",2011,July
"Hideaki Yamakawa,Yoshihisa TOKUNAGA,Takahiro SAKAGUCHI,Fumio KOYAMA","Mode Selectivity and Athermal Operation for Hollow Waveguide DBR Lasers",,"IEICE LQE2011",,,,,2011,June
"Fumio Koyama,Ken Kirita,Hamed Dalir,Akihiro Imamura,Takahiro Sakaguchi","Vertical Interconnects and Multi-mode MultiplexerslDemultiplexers based on Multi-mode Hollow Waveguide",,"IPDA11?5",,,,"pp. 25-30",2011,May
"Hideaki Yamakawa,Naomi Tadokoro,Takahiro Sakaguchi,Yoshihisa Tokunaga,Fumio Koyama","Athermal Hollow Waveguide Distributed Bragg Reflector Laser","Conference on Lasers and Electro-Optics, CLEO2011",,,"  CMI6",,,2011,May
"Naomi Tadokoro,Hideaki Yamakawa,Takahiro Sakaguchi,Fumio Koyama","Mode Selectivity for Hollow Waveguide Tunable Laser",,"IEICE General Conference 2011",,,"  C-4-21",,2011,Mar.
"Hiroshi Takanashi,Tomoyuki Kato,Akihiro Matsutani,Takahiro Sakaguchi,Kohroh Kobayashi,Hiroyuki Uenohara","凹面鏡を用いた二往復共振器受動モード同期VCSELの動作特性","2011年電子情報通信学会総合大会",,,"  C-4- 12",,,2011,Mar.
"Yoshihisa Tokunaga,Hideaki Yamakawa,Takahiro Sakaguchi,Fumio Koyama","Athermal Operation for Hollow Waveguide DBR Laser",,"IEICE General Conference 2011",,,"  C-4-22",,2011,Mar.
"Ken Kirita,Takahiro Sakaguchi,Fumio Koyama","Vertical Interconnections for Stacked Photonic Integrated Circuits with Multimode Interference Hollow Waveguide","16th MicroOptics Conference, MOC2010",,,"  WC4",,,2010,Oct.
"Ken Kirita,Takahiro Sakaguchi,Fumio Koyama","Variable Connections for Stacked Photonic Integrated Circuits by Multimode Interference Hollow Waveguide",,"The 71th Autumn Meeting of JSAP",,,"  14a-G-7",,2010,Sept.
"Takeru Sakairi,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Gating function and spot-size dispersion characteristics of slow light waveguide device",,"The 57th Spring Meeting of Japan Society of Applied Physics and Related Societies",,"  18p-P6-22",,"  05-120",2010,Sept.
"Ayumi Fuchida,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Optical Switch with Slowing Light in Bragg Reflector Waveguide",,"G-COE International Symposium",,,"  P-40",,2010,Mar.
"Takayoshi Fujisawa,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","In-plane Optical Coupling to Bragg Reflector Slow Light Waveguide Devices",,"G-COE International Symposium",,,"  P-41",,2010,Mar.
"Ken Kirita,Takahiro Sakaguchi,Fumio Koyama","Polarization-insensitive Vertical MMI Hollow Waveguide Coupler for 3D Integrated Photonic Circuits",,"G-COE International Symposium",,,"  P-39",,2010,Mar.
"Padullaparthi Babu Dayal,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Multiple-Wavelength Vertical-Cavity Surface-Emitting Lasers by Grading a Spacer Layer for Short-Reach Wavelength Division Multiplexing Applications",,"Appl. Phys. Exp.",,"vol. 2","no. 9",,2009,Aug.
"Hiroshi Takanashi,Tomoyuki Kato,Akihiro Matsutani,Takahiro Sakaguchi,Takashi Miyaguchi,Kohroh Kobayashi","Actively mode-locked VCSEL module with double-path resonance configuration","OECC2009",,,,,,2009,July
"FUMIO KOYAMA,Padullaparthi Babu Dayal,Akihiro Imamura,Takahiro Sakaguchi,Akihiro Matsutani","Multiple-Wavelength GaInAs/GaAs VCSELs with Grading a Spacer Layer for Short Reach WDM Applications","IPRM2009","2009 International Conference on Indium Phosphide and Related Materials",,"  Tu B2-6",,"pp. 182-184",2009,May
"Hiroshi Takanashi,Tomoyuki Kato,Akihiro Matsutani,Takahiro Sakaguchi,Kohroh Kobayashi","Passively mode-locked laser using two VCSEL mesas","Proceedings of the 2009 IEICE General Conference",,,,"No. C-4-30","p. 278",2009,Mar.
"Tomoyuki Kato,Hiroshi Takanashi,Takashi Miyaguchi,Akihiro Matsutani,Takahiro Sakaguchi,Kohroh Kobayashi","Active mode-locked laser module using a VCSEL","Proceedings of the 2009 IEICE General Conference",,,,"No. C-4-31","p. 279",2009,Mar.
"Jun Yoshida,Takeru Sakairi,Koichi Hasebe,Go Hirano,Takahiro Sakaguchi,Fumio Koyama,Nobuhiko Nishiyama,Catherine Caneau,Chung-En","Characterization of Slow Light in Bragg Reflector Waveguide Device",,"The 56th Spring Meeting of Japan Society of Applied Physics",,,"  2a-B-7","p. 1245",2009,Mar.
"Jun Nakajima,Yuki Hashizume,Takahiro Sakaguchi,Fumio Koyama","Fabrication of tunable hollow waveguide reflector using nanoimprint process",,"The 56th Spring Meeting of Japan Society of Applied Physics",,,"  2a-B-4","p. 1244",2009,Mar.
"Babu Dayal,Akihiro Imamura,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Fabrication of multiple-wavelength GaInAs/GaAs  VCSEL array with grading a spacer layer",,"The 56th Spring Meeting of Japan Society of Applied Physics",,,"  1p-G-13","p. 1199",2009,Mar.
"Yusuke Mada,Koichi Hasebe,Takeru Sakairi,Takahiro Sakaguchi,Akihiro Matsutachi,Fumio Koyama","Bandwidth enhancement of directly-modulated VCSELs with optical filtering",,"The 56th Spring Meeting of Japan Society of Applied Physics",,,"  1p-G-11","p. 1198",2009,Mar.
"Koichi Hasebe,Takahiro Sakaguchi,Yusuke Mada,Fumio Koyama,Xiaoxue Zhao","Bandwidth Enhancement of Directly Modulated DFB Lasers and EML Lasers using Optical Equalizers","21st Annual Meeting of The IEEE Lasers & Electro-Optics Society, LEOS2008",,,,"  WV4","pp. 593-594",2008,Nov.
"P. Babu Dayal,Jun Nakajima,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Multiple-wavelength VCSEL arrays using surface nano-machining process for WDM applications","21st Annual Meeting of The IEEE Lasers & Electro-Optics Society, LEOS2008","21st Annual Meeting of The IEEE Lasers & Electro-Optics Society, LEOS2008",,,"  TuEE4","pp. 400-401",2008,Nov.
"Ayumi Fuchida,P. Babu Dayal,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Low Polarization Dependence of Bragg Reflector Slow Light Waveguides","21st Annual Meeting of The IEEE Lasers & Electro-Optics Society, LEOS2008",,,,"  WN5","pp. 525-526",2008,Nov.
"Tomoyuki KATO,Hiroshi TAKANASHI,Akihiro MATSUTANI,Takahiro SAKAGUCHI,Kohroh KOBAYASHI","Active mode-locked VCSEL using external concave mirror with high repetition rate and low threshold current","電子情報通信学会 LQE研究会",,,,,,2008,Oct.
"Ayumi Fuchida,P. BabuDayal,Takahiro Sakaguchi,Keiske Kuroki,Akihiro Matsutani,Fumio Koyama","Investigation on Miniature Optical Gate with Showing light",,"The 69th Autumn Meeting of JSAP",,,"  5p-ZN-5","p. 1062",2008,Sept.
"Tomoyuki Kato,Akihiro Matsutani,Takahiro Sakaguchi,Kohroh Kobayashi","24GHz Mode-Locking of VCSEL with External Concave Mirror","ISLC2008",,,,,,2008,Sept.
"Tomoyuki Kato,Akihiro Matsutani,Takahiro Sakaguchi,Kohroh Kobayashi","31 GHz SUB-HARMONIC ACTIVE MODE-LOCKED VCSEL WITH LOW THRESHOLD CURRENT","MOC2008",,,,,,2008,Sept.
"Tomoyuki Kato,Hiroshi Takanashi,akihiro matsutani,Takahiro Sakaguchi,Kohroh Kobayashi","VCSELと凹面鏡を用いた31GHzアクティブモード同期","電子情報通信学会2008年ソサイエティ大会",,,,"  C-4-10","p. 216",2008,Sept.
"Keisuke Kuroki,Ayumi Fuchida,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Miniature Optical Gate with VCSEL-based Slow Light Bragg Reflector Waveguide","ISLC2008",,,"  TuC3",,"pp. 67",2008,Sept.
"Xiaoxue Zhao,Koich Hasebe,Takahiro Sakaguchi,Fumio Koyama,Connie J. Chang-Hasnain,Nobuhiko Nishiyama,Catherine Canueau,Chung-En Zah","Tunable optical equalizer using diffraction grating filters",,"IEEE Photon. Technol. Lett",,"vol. 20","no. 18","pp. 1590",2008,Sept.
"Ayumi Fuchida,P. Babu Dayal,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama","Polarization Dependence of Insertion Loss of Bragg Reflector Slow Light Waveguide",,"The 2008 IEICE SOCIETY CONFERENCE",,,"  C-3-27","p. 149",2008,Sept.
"Koichi Hasebe,Takahiro Sakaguchi,Fumio Koyama","Opticcal equalization of high-speed modulation for directly modulated DFB lasers",,"The 69th Autumn Meeting of JSAP",,,"  5a-ZN-4","p. 1058",2008,Sept.
"Tomoyuki Kato,Akihiro Matsutani,Takahiro Sakaguchi,Kohroh Kobayashi","Double-path resonance of a mode-locked VCSEL using a concave mirror","OECC/ACOFT 2008",,,,,,2008,July
"Koichi Hasebe,XiaoUe Zhao,Takahiro Sakaguchi,Fumio Koyama,Connie Chang-Hasnain,Nobuhiko Nishiyama,Cathrine Caneau,Chung-en Zah","Bandwidth Enhancement with Tunable Optical Equalizer for High Speed Intensity Modulation","CLEO 2008","2008 Conference on Lasers and Electro-Optics & Quantum Electronics and Laser Science Conference, Vols 1-9",,,,"pp. 430-431",2008,May
"Koichi Hasebe,Xiaoxue Zhao,Takahiro Sakaguchi,Fumio Koyama,Connie J. Chang-Hasnain,Nobuhiko Nishiyama,Catherine Caneau,Chung-En Zah","Bandwidth Enhancement of Directly Modulated DFB Lasers and EML Lasers using Optical Equalizers","Conference on Lasers and Electro-Optics, CLEO",,,,"  CME1",,2008,May
"Koichi Hasebe,Xiauxue Zhao,Fumio Koyama,Connie J. Chang-Hasnain,Catherine Caneau,Chung-En Zah","Bandwidth enhancement with tunable optical equalizer for directly modulated VCSELs",,"The 55th Spring Meeting of JSAP",,,"  30a-ZQ-4",,2008,Mar.
"Tomoyuki Kato,Akihiro Matsutani,Takahiro Sakaguchi,Kohroh Kobayashi","Mode-locked VCSEL using double-path resonance with concave mirror","電子情報通信学会2008年総合大会",,,,"No. C-4-28","p. 311",2008,Mar.
"Tomoyuki Kato,Akihiro Matsutani,Takahiro Sakaguchi,Kohroh Kobayashi","Sub-harmonic mode-locking of VCSEL with a concave external mirror",,"IEICE Electronics Express",,"Vol. 5","No. 4","pp. 152-156",2008,Feb.
"Tomoyuki Kato,Akihiro Matsutani,Takahiro Sakaguchi,Kohroh Kobayashi","Model-Locked VCSEL with External Cavity Formed by Concave Mirror",,,,,"No. WEE1","pp. 668-669",2007,Oct.
"Tomofumi Takeishi,Takahiro Sakaguchi,Fumio Koyama","Giant Tuning Chracteristics of Tapered Tunable Hollow Waveguide Bragg Reflector",,"Proceeding of the 2007 IEICE Society Couference",,,"No. C-3-4","p. 127",2007,Sept.
"Keisuke Kuroki,Go Hirano,Fumio Koyama,Koichi Hasebe,Takahiro Sakaguchi","Slow Light Waveguide Detector Slowing Loght in Bragg Reflector Waveguide",,"33rd European Conference and Exhibition on Optical Communication, ECOC07",,,"  P-49",,2007,Sept.
"Keisuke Kuroki,Go Hirano,Fumio Koyama,Koichi Hasebe,Takahiro Sakaguchi,Nobuhiko Nishiyama,Catherine Cauneau,Chung-En Zah","Slow Light Detector with Bragg Reflector Waveguide",,"The 68th Autumn Meeting of Japan Society of Applied Physics and Related Societies",,,"No. 4p-P3-14","p. 1193",2007,Sept.
"Koichi Hasebe,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama,Nobuhiko Nishiyama,Catherine Cauneau,Chung-En Zah","Transverse-mode and Plarization Characteristics of 1.55μm Micromachined VCSELs",,"The 68th Autumn Meeting of Japan Society of Applied Physics and Related Societies",,,"No. 8a-C-1","p. 1166",2007,Sept.
"Tomoyuki Kato,Akihiro Matsutani,Takahiro Sakaguchi,Kohroh Kobayashi","10GHz mode-lock using composite resonator VCSEL with concave mirror","電子情報通信学会2007年ソサイエティ大会",,,,"No. C-4-20","p. 226",2007,Sept.
"Koichi Hasebe,Wiganes Janto,Nobuhiko Nishiyama,Catherine Caneau,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama,Chung-En Zah","Transverse-mode and Polarization Characteristics of 1.55 μm Micromachined VCSELs","12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication, OECC/IOOC2007","12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication, OECC/IOOC2007",,,"No. 12D4-3","pp. 412-413",2007,July
"Tomofumi Takeishi,Takahiro Sakaguchi,Fumio Koyama","Fabrication and characterization of tunable chromatic dispersion compensator based on hollow waveguide","12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication, OECC/IOOC2007","12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication, OECC/IOOC2007",,,"  12E3-3","pp. 442-443",2007,July
"Wiganes Janto,Koich Hasebe,Nobuhiko Nishiyama,Catherine Caneau,Takahiro Sakaguchi,Akihiro Matsutani,Fumio Koyama,Chang-en Zah","Athermal Operation of Micromachined VCSELs using Bimorph Effect","The 54th Spring Meeting of Japan Society of Applied Physics and Related Societies",,,,"No. 29a-SG-9","p. 1230",2007,Mar.
"Go Hirano,Fumio Koyama,Koichi Hasebe,Takahiro Sakaguchi,Nobuhiko Nishiyama,Catherine Caneau,Chung-En Zah","Slow light modulator with Bragg reflector waveguide",,"Optical Fiber Communications Conference 2007",,,"  PDP34",,2007,Mar.
"Wiganes Janto,Koichi Hasebe,Nobuhiko Nishiyama,Catherine Caneau,Takahiro Sakaguchi,Akihiro Matsutani,P. Babu Dayal,Fumio Koyama,Chung-En Zah","Athermal operation of 1.55 μm InP-based VCSEL with thermally-actuated cantilever structure","20th International Semiconductor Laser Conference","20th International Semiconductor Laser Conference",,,"  PD1.1",,2006,Sept.
"Wiganes Janto,Koichi Hasebe,Nobuhiko Nishiyama,Catherine Caneau,Takahiro Sakaguchi,Akihiko Matsutani,Fumio Koyama,Chung-En Zah","Micromachined Resonant-Cavity Photodetectors with Low Temperature Dependence","Extended Abstracts (The 67nd Autumn Meeting) of Jpn. Soc. Appl. Phys.",,,,"No. 29p-ZX-2","p. 1071",2006,Sept.
"Yasuki Sakurai,Yasushi Yokota,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Tunability and athermal operation of tunable hollow waveguide with monolithic MEMS actuator","Extended Abstracts (The 53th Spring Meeting) of Jpn. Soc. Appl. Phys.",,,,"No. 22p-Y-16","pp. 1247",2006,Mar.
"Wiganes Janto,Nobuhiko Nishiyama,Catherine Caneau,Takahiro Sakaguchi,Akihiko Matsutani,Fumio Koyama,Chung-En Zah","Fabrication and Characterization of InP/GaInAsP based Self-Adjustable Cantilever for Temperature-Insensitive VCSELs","The 53th Spring Meeting of Jpn. Soc. Appl. Phys.","The 53th Spring Meeting of Jpn. Soc. Appl. Phys.",,,"No. 22p-Y-15","pp. 1247",2006,Mar.
"Yasuki Sakurai,Hideaki Yamakawa,Yasushi Yokota,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Hollow Waveguide Distributed Bragg Reflector for Widely Tunable Optical Devices","Optical Fiber Communications Conference 2006","Optical Fiber Communications Conference 2006",,,"  OtuM4",,2006,Mar.
"Yasuki Sakurai,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Tunable Planar Air-Core Resonator Based on Tunable Hollow Waveguide",,"Jpn. J. Appl. Phys",,"Vol. 45","No. 11","pp. L326-L328",2006,Mar.
"Yasuki Sakurai,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Tunable wavelength filter based on hollow waveguide Bragg reflectors","Extended Abstracts (The 53th Spring Meeting) of Jpn. Soc. Appl. Phys.",,,,"No. 22p-Y-167","pp. 1248",2006,Mar.
"Takeshi Uchida,Tomoyuki Miyamoto,Takahiro Sakaguchi,Fumio Koyama","Transverse mode control in long monolithic-cavity VCSELs with temperature-profile control",,"Electron. Lett.",,"vol. 42","no. 2","pp. 94-95",2006,Jan.
"Takeshi Uchida,Tomoyuki Miyamoto,Takahiro Sakaguchi,Fumio Koyama","High-Order Transverse Mode Suppression in VCSELs with Temperature-Profile Control","The 18th Annual Meeting of the IEEE Lasers and Electro-Optics Society",,,,,,2005,Oct.
"Yasuki Sakurai,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Dispersion control using hollow waveguide Bragg reflector with variable tapered air-core","2005年秋季第66回応用物理学会学術講演会","Extended Abstracts (The 66nd Autumn Meeting) of Jpn. Soc. Appl. Phys.",,"Vol. 3","No. 9a-T-26","pp. 1049",2005,Sept.
"Takeshi Uchida,Tomoyuki Miyamoto,Takahiro Sakaguchi,Fumio Koyama","Transverse mode control in long-monolithic-cavity VCSELs with temperature-profile control (II)","The 66th Autumn Meeting of The Japan Society of Applied Physics",,,,,,2005,Sept.
"Yasuki Sakurai,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Air-core Resonator with Widely Tunable Hollow Waveguide Bragg Reflectors","31st European Conference on Optical Communication","SEE",,,"No. Th1.5.7","pp. 467",2005,Sept.
"Yasuki Sakurai,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","Giant Bragg wavelength tuning of tunable hollow waveguide Bragg reflector",,"Jpn. J. Appl. Phys.",,"Vol. 44","No. 37","pp. L1171-L1173",2005,Sept.
"Yasuki Sakurai,Akihiro Matsutani,Takahiro Sakaguchi,Fumio Koyama","160nm Continuous Wavelength Tuning of Tunable Hollow Waveguide Bragg Reflector","Conference on Lasers and Electro-Optics","Optical Society of America",,"Vol. CPDA6",,,2005,May
"TAKAHIRO SAKAGUCHI,Yasuki Sakurai,Miura Toru,FUMIO KOYAMA","Propagation Measurement of Hollow Optical Waveguide with Dielectric Multilayer Mirrors",,"Extended Abstracts (The 51th Spring Meeting) of Jpn. Soc. Appl. Phys.",,"Vol. 3","No. 28-N-11","pp. 1293",2004,Mar.
"Takahiro Sakaguchi,Yasuki Sakurai,Toru Miura,Fumio Koyama","Propagation Loss Measurement of Hollow Optical Waveguide with Dielectric Multilayer Mirrors","The 2003 IEICE Society Conference","The 2003 IEICE Society Conference",,,"No. C-3-86","p. 219",2003,Sept.
"三浦 達,田中 寿知,坂口 孝浩","Fabrication of hollow waveguide and it's application to photonic integrated",,"THE INSTITUTE ELECTRONICS",,,"No. OPE99-34, LQE99-28","pp. 1-6",2003,Jan.
"Takahiro Sakaguchi,Fumio Koyama,Kenichi Iga","Fabrication and characterization of vertical micro-cavity structures for GaN surface emitting lasers",,"Journal of the Japanese Association for Crystal Growth",,"Vol. 29","No. 2","p. 143",2002,Aug.
"Tsukasa Yoshida,Yoshihiko Uchida,Takahiro Sakaguchi,Tomoyuki Miyamoto,Fumio Koyama,Kenichi Iga","Characterization of thin film InGaN/GaN QWs formed by removing a substrate with UV laser irradiation for blue VCSELs","8th Microoptics Conf. (MOC'01)",,,,,"pp. 76-79",2001,Oct.
"吉田 司,内田 慶彦,坂口 孝浩,宮本 智之,小山 二三夫,伊賀 健一","Characteristic of InGaN/GaN QW microcavity formed by removing with UV light for blue VCSLs",,"Extended Abstracts (The 62th Autumn Meeting) of Jpn. Soc. Appl. Phys.",,"Vol. 1","No. 14p-N-2","pp. 296",2001,Sept.
"Ayako Murakami,Shigeaki Sekiguchi,Takahiro Sakaguchi,Tomoyuki Miyamoto,Fumio Koyama,Kenichi Iga","Proposal of optically pumped tunable surface emitting laser",,"Jpn. J. Appl. Phys.",,"vol. 40","no. 9A/B","pp. L935-L936",2001,Sept.
"坂口 孝浩,伊賀 健一","The basic technology reclamation of Vertical Cavities for GaN Surface Emitting Laser",,"The 24th Research on Short-Wavelength Semiconductor Optoelectronic Devices for Ultra High-Density and Ultra High-Speed Information Processing",,,"No. 24","pp. 133-137",2001,Apr.
"Y. Uchida,T. Sakaguchi,T. Yoshida,F. Koyama,K. Iga","Photo-pumped GaInN/GaAlN QW Vertical Cavity Structure",,"2000 Japan-Korea Joint Workshop Short-Wavelength Semiconductor Optoelectronics Devices and Materials",,,,"pp. 83-84",2000,Oct.
"内田慶彦,岩田雅年,Takahiro Sakaguchi,吉田司,Tomoyuki Miyamoto,FUMIO KOYAMA,Kenichi Iga","Characteristic of optical pumping for GaN VCSEL structure","The 61st Autumn Meeting of The Japan Society of Applied Physics",,,,,,2000,Sept.
"Y. Moriguchi,T. Miyamoto,T. Sakaguchi,M. Iwata,Y. Uchida,F. Koyama,K. Iga","GaN polycrystal light grownth on silica substrate by metalorganic vapor phase epitaxy (MOVPE)",,"Proceedings of the 3nd International Symposium on Blue Laser and Light Emitting Diodes",,"Vol. We-P19",,,2000,Mar.
"森口 雄一郎,宮本 智之,坂口 孝浩,岩田 雅年,内田 慶彦,小山 二三夫,伊賀 健一","GaN-based Crystal Growth on SiO2 substrate by MOVPE (III) -Growth of Hetero-Structure-",,"Extended Abstracts (The 47th Spring Meeting) of Jpn. Soc. Appl. Phys.",,"Vol. 1","No. 28p-YN-4","pp. 346",2000,Mar.
"Y. Moriguchi,T. Miyamoto,T. Sakaguchi,M. Iwata,Y. Uchida,F. Koyama,K. Iga","GaN polycrystal light emtter grown silica substrate by metalorganic vapor phase epitaxy (MOVPE)",,"International Symposium on Ultra-Parallel Optoelectronics",,,"No. P-2","pp. 67-68",2000,Feb.
"Fumio Koyama,Dietmar Schlenker,Tomoyuki Miyamoto,Zhibiao Chen,Akihiro Matsutani,Takahiro Sakaguchi,Kenichi Iga","Data transmission over single-mode fiber by using 1.2 μm uncooled GaInAs-GaAs laser for Gbit/s local area network",,"IEEE Photon. Technol. Lett.",,"Vol. 12","No. 2","pp. 125-127",2000,Feb.
"F. Koyama,T. Miyamoto,Z. Chen,A. Matsutani,T. Sakaguchi,K. Iga","Highly strained GaInAs/GaAs QW for 1.2 μm surface emitting lasers","IEEE/LEOS Summer Topical Meetings,LEOS Summer’99",,,,,"pp. 23",1999,Sept.
"F. Koyama,D. Schlenker,T. Miyamoto,Z. Chen,A. Matsutani,T. Sakaguchi,K. Iga","2 Gbit/s single-mode fiber data transmission using 1.2 μm heatsink-free GaInAs/GaAs laser for Gbit/s-LAN","25th European Conf. on Optical Communication (ECOC’99)",,,,,"pp. II-78",1999,Sept.
"FUMIO KOYAMA,Dietmar Schlenker,Tomoyuki Miyamoto,Zhibiao Chen,Akihiro Matsutani,Takahiro Sakaguchi,Kenichi Iga","1.2μm highly strained GaInAs/GaAs quantum well lasers for singlemode fibre datalink",,"Electron. Lett.",,"vol. 35","no. 13","pp. 1079-1081",1999,June
"Masatoshi Iwata,Takahiro Sakaguchi,Akira Inoue,Yuichiro Moriguchi,Yoshihiko Uchida,FUMIO KOYAMA,Kenichi Iga","AlGaN barrier layer in InGaN multi-quantum-wells","The 46th Spring Meeting of The Japan Society of Applied Physics and Related Societies",,,"  28p-N-15",,,1999,Mar.
"森口雄一郎,Tomoyuki Miyamoto,Takahiro Sakaguchi,井上彰,岩田雅年,内田慶彦,FUMIO KOYAMA,Kenichi Iga","GaN-based crystal growth on SiO<sub><small>2</small></sub> substrate by MOVPE (II) - growth and characterization of InGaN -","The 46th Spring Meeting of Japan Society of Applied Physics and Related Societies",,,,,,1999,Mar.
"坂口 孝浩,井上 彰,伊賀 健一","GaN系面発光レーザ用共振器構造に関する検討と製作",,"短波長光デバイス第162委員会第14回研究会",,,"No. 14","pp. 6-11",1999,
"T. Honda,H. Kawanishi,T. Sakaguchi,F. Koyama,K. Iga","Characteristic Temperature Estimation for GaN-Based Lasers",,"MRS Internet J. Nitride Semicond. Res.",,,"No. 4S1","pp. G6.2",1999,
"T. Sakaguchi,T. Shirasawa,N. Mochida,A. Inoue,MaS. Iwata,T. Honda,F. Koyama,K. Iga","Highly reflective AlN/GaN and ZrO2/SiO2 multilayer distributed Bragg reflectors for InGaN/GaN surface emitting lasers","IEEE Lasers and Electro-Optics Society 1998 Annual Meeting, LEOS'98",,,"  TuC4",,,1998,Dec.
"T. Honda,A. Inoue,M. Mori,T. Shirasawa,N. Mochida,K. Saotome,T. Sakaguchi,A. Ohtomo,M. Kawasaki,H. Koinuma,F. Koyama,K. Iga","GaN growth on ozonized sapphire(0001) substrates by MOVPE",,"J. Crystal Growth",,"Vol. 195","No. 1-4","pp. 319-322",1998,Dec.
"A. Inoue,T. Sakaguchi,Y. Moriguchi,T. Miyamoto,M. Iwata,F. Koyama,K.Iga","InGaN selective MOCVD growth and polycrystalline formation on SiO2-patterned sapphire substrate","2nd Int. Symp. on Blue Laser and Light Emitting Diodes, ISBLLED'98",,,,,,1998,Sept.
"T. Honda,A. Inoue,M. Mori,T. Shirasawa,N. Mochida,K. Saotome,T. Sakaguchi,A. Ohtomo,M. Kawasaki,H. Koinuma,F. Koyama,K. Iga","GaN growth on ozonized sapphire (0001) substrates by MOVPE",,"Journal of Crystal Growth",,"Vol. 195",,"pp. 319-322",1998,
"N. Mochida,T. Honda,T. Shirasawa,A. Inoue,T. Sakaguchi,Fumio Koyama,K. Iga","Crystal Orientation Dependence of p-type Contact Resisitance of GaN",,"Journal of Crystal Growth",,,"No. 180/190","pp. 716-719",1998,
"T. Honda,T. Miyamoto,T. Sakaguchi,H. Kawanishi,F. Koyama,K. Iga","Effect of piezo electric field on emission characteristics GaN/AlGaN quantum wells",,"Journal of Crystal Growth",,,"No. 180/190","pp. 644-647",1998,
"T. Shirasawa,T. Honda,N. Mochida,A. Inoue,T. Sakaguchi,Fumio Koyama,K. Iga","Interface Control of GaN/AlGaN Quantum Well Structures in MOVPE Growth",,"Journal of Crystal Growth",,,"No. 180/190","pp. 124-127",1998,
"坂口 孝浩,井上 彰,岩田 雅年,森口 雄一郎,内田 慶彦,小山 二三夫,伊賀 健一","横成長によるGaN系面発光レーザーの検討",,"秋季第59回応用物理学会学術講演会",,,"No. 18p-YC-1","pp. 326",1998,
"坂口 孝浩,白澤 智恵,持田 宜晃,井上 彰,岩田 雅年,本田 徹,小山 二三夫,伊賀 健一","GaN系面発光レーザー用共振器構造の製作",,"秋季第59回応用物理学会学術講演会",,"Vol. 1","No. 18p-YC-4","pp. 327",1998,
"本田 徹,白澤 智恵,持田 宜晃,井上 彰,松谷 晃宏,坂口 孝浩,小山 二三夫,川西 英雄,伊賀 健一","GaN系面発光レーザの設計と製作技術に関する基礎検討",,"電子通信学会論文誌",,"Vol. J81-C-II","No. 1","pp. 97-104,",1998,
"N. Hatori,A. Mizutani,N. Nishiyama,A. Matsutani,T. Sakaguchi,F. Motomura,F. Koyama,K. Iga","An over 10Gbits/s transmission experiment using p-type d-doped InGaAs/GaAs quantum-well vertical cavity surface emitting Laser",,"Photon. Tech. Lett.",,"Vol. 10","No. 2","pp. 194-196",1998,
"T. Sakaguchi,T. Honda,A. Katsube,F. Koyama,K. Iga","MgO/SiO<sub>2</sub> dielectric multilayer reflectors formed by electron-beam evaporation for GaN surface emitting semiconductor lasers",,"Processing Topical Nitride Workshops","Processing Topical Nitride Workshops",,,"pp. 255-257",1997,
"坂口 孝浩,小山 二三夫,伊賀 健一","GaN系面発光レーザ用反射鏡の設計と形成技術",,"短波長光デバイス第162委員会第9回研究会",,,"No. 9","pp. 85-90",1997,
"T. Honda,T. Sakaguchi,F. Koyama,K. Iga,H. Munekata,Kukimoto","Design and Fabrication of ZnSe-Based Blue/Green Surface Emitter Lasers",,"Journal of Crrystal Growth",,,"No. 159","pp. 595-599",1996,
"T. Honda,A. Katsube,T. Sakaguchi,F. Koyama,K.Iga","Design of GaN-based surface emitting laser with low threshold operation","Int. Conf. on Silicon Carbide and Related Materials(ICSCRM-95)",,,,"  Tup-14","pp. 279-280",1995,Sept.
"A. Katsube,T. Honda,T. Sakaguchi,F. Koyama,K. Iga","Design of low threshold GaN-based quantum well surface emitting laser","Topical Workshop on III-V Nitrides(TWIII-VN)",,,,,"p. 8",1995,Sept.
"T. Honda,T.Sakaguchi,F. Koyama,K. Iga,K. Inoue,H. Munekata,H. Kukimoto","Design and fabrication of ZnSe-based blue/green surface emitting lasers","7th Int. Conf. on II-VI Compounds and Devices(ICII-VICD)",,,,,,1995,Aug.
"T. Honda,A. Katsube,T. Sakaguchi,F. Koyama,K. Iga","Design of GaN-Based Surface Emitting Laser with Low Threshold Operation",,"Paper presennted at Silicon Carbide and Related Materials 1995 Conf.",,,"No. 142","pp. 1015-1018",1995,
"T. Sakaguchi,T. Honda,A. Katsube,F. Koyama,K. Iga","MgO/SiO<sub>2</sub> Dielectric Multilayer Reflectors for GaN-based Ultra-violet Surface Emitting Lasers",,"LEOS'95 Annual Metting Conference Proceedings",,"Vol. 2",,"pp. 102-103",1995,
"T. Sakaguchi,T. Honda,A. Katsube,F. Koyama,K. Iga","MgO/SiO<sub>2</sub> Dielectric Multilayer Reflectors Formed By Electron-Beam Evaporation for Surface Emitting Lasers",,"Topical Workshop on III-V Nitrieds",,,,"pp. P-10",1995,
"坂口 孝浩,本田 徹,勝部 敦史,小山 二三夫,伊賀 健一","Electron-Beam Evaporation of Dielectric Multi-layer Reflectors for GaN Surface Emitting Lasers.",,"Extended Abstracts (The 42nd Spring Meeting) of Jpn. Soc. Appl. Phys.",,,"No. 30p-ZH-15","pp. 297",1995,
"T. Honda,T. Sakaguchi,F. Koyama,K. Iga,K. Yanashima,K. Inoue,H. Munekata,Kukimoto","Optically Pumped ZnSe-Based Vertical Cavity Surface Emitter with SiO<sub>2</sub>/TiO<sub>2</sub> Multilayer Reflector",,"Jpn. J. Appl. Phys.",,"Vol. 78","No. 7",,1995,
"T. Honda,A. Katsube,T. Sakaguchi,F. Koyama,K. Iga","Threshold Estimation of GaN-based Surface Emitting Lasers Operting in Ultraviolet Spectral Region",,"Jpn. J. Appl. Phys.",,"Vol. 34",,"pp. 3527-3532",1995,
"坂口 孝浩,本田 徹,勝部 敦史,小山 二三夫,伊賀 健一","Design of Multilayer Reflectors for GaN Surface Emitting Lasers",,"Fall Nat'l Conv. Rec. IEICE of Jpn.",,,"No. C-317","pp. 1-318",1994,
"坂口 孝浩,内田 貴司,小山 二三夫,伊賀 健一","A Semiconductor/Dielectric Hybrid Mirror for Surface Emitting Lasers",,"電子情報通信学会秋季大会",,,"No. C-158","pp. 4-180",1992,
"K. Moriki,Y. Ohnishi,H. Katoh,T. Inoue,T. Sakaguchi,T.  Hattori,K. Iga","GaAlAs/GaAs Optical Beam Scanner Using Phased Array Waveguides",,"Jpn. J. Appl. Phys.",,"Vol. 31","No. 3","pp. 807-808",1992,
"Takahiro Sakaguchi,FUMIO KOYAMA,KENICHI IGA","Design and Fabrication of a Surface Emitting Laser Using Semiconductor Distributed Bragg Reflectors",,"Published in Proceeding the Review of Laser Engineering",,"Vol. 18","No. 3","pp. 137-145",1990,Mar.
"Takahiro  Sakaguchi,M. Oshikiri,Fumio Koyama,Kenichi Iga","TiO/SiO dielectric multilayer reflector for surface emitting semiconductor lasers",,"Proc. MRS Int'l MeetinG.n Advanced Materials",,"vol. 10",,"pp. 243-251",1988,Dec.
"Takahiro Sakaguchi,Fumio Koyama,Kenichi Iga","A consideration on structures of a surface emitting laser with a semiconductor multilayer distributed Braggrueflector.","昭和63年電子情報通信学会秋季全国大会","National Conventional Record of IEICE of Japan",,,"No. C-168","pp. C-1-50",1988,Sept.
"Takahiro Sakaguchi,Fumio Koyama,Kenichi Iga","Vertical cavity surface emitting laser with AlGaAs/AlAs Bragg reflector",,"Electronics Letter",,"Vol. 24","No. 15","pp. 928-929",1988,Aug.
"T. Sakaguchi,F. Koyama,K. Iga","A vertical cavity GaAs/AlAs DBR surface emitting laser and its lasing characteristics","11th Int. Semiconductor Laser Conf., ISLC'88",,,"  N-1",,"pp. 162-163",1988,Aug.
"T. Sakaguchi,M. Oshikiri,F. Koyama,K. Iga","TiO2 (or Si)/SiO2 dielectric multilayer reflector for surface emitting semiconductor lasers","Int. MeetinG.n Advanced Materials",,,"  K4.6",,,1988,May
"Fumio Koyama,Hiroyuki Uenohara,Takahiro Sakaguchi,Kenichi Iga","GaAlAs/GaAs MOCVD growth for Surface Emitting Laser",,"Jpn. J. Appl. Phys.",,"Vol. 26","No. 7","pp. 1077-1081",1987,July
"Susumu Kinoshita,Takahiro Sakaguchi,Tetsushi Odagawa,Kenichi Iga","GaAlAs/GaAs Surface Emitting Laser with High Reflective TiO2/SiO2 Multilayer Bragg Reflector",,"Jpn. J. Appl. Phys.",,"Vol. 26","No. 3","pp. 410-415",1987,Mar.
"F. Koyama,H. Segawa,A Nakamura,T. Sakaguchi,K. Iga","MOCVD growth and characterization of GaAlAs/GaAs multi-heterostructure for surface emitting laser","12th European Conf. on Optical Communication, ECOC'86",,,,,"pp. 97-100",1986,Sept.
"F. Koyama,H. Segawa,S. Kinoshita,H. Uenohara,T.Sakaguchi,A.Nakamura,K. Iga","GaAlAs/GaAs MOCVD growth device and materials","18th Int. Conf. on Solid State Devices and Materials, SSDM'86",,,"  C-9-3",,"pp. 757-758",1986,Aug.
"Susumu Kinoshita,Takahiro Kobayashi,Takahiro Sakaguchi,Tetsushi Odagawa,Kenichi Iga","Room temperature pulse operation of GaAs surface emitting laser by using TiO2/SiO2 dielectric multilayer reflector",,"電子通信学会論文誌",,"Vol. J69-C","No. 4","pp. 412-420",1986,Apr.
"Takahiro Sakaguchi",,,,,,,,1984,