"Ge Chang,Ahmed M. A. Hassan,Shanting Hu,Fumio Koyama","Modeling of surface grating-loaded VCSEL with slowing light",,"Japanese Journal of Applied Physics",,"Vol. 61","No. SK","pp. SK1010-1-5",2022,June
"Hameeda R Ibrahim,Xiaodong Gu,Ahmed M. A. Hassan,Satoshi Shinada,Moustafa Ahmed,Fumio Koyama","Single-Mode 1060nm Bottom Emitting Metal Aperture VCSEL Array for Co-Packaged Optics","CLEO 2022",,,"  STu5E.6 (2022)",,,2022,May
"’I‹ī ˜a^,“Ą‰Š ˆÐ,Ahmed M. A. Hassan,ŒÚ ‹Å“~,ŽŽR “ņŽO•v","VCSEL ƒr[ƒ€‘•ƒfƒoƒCƒX‚É‚æ‚é LiDAR ƒVƒXƒeƒ€ŒŸ“ĒV","‘æ69‰ņ‰ž—p•Ļ—Šw‰ït‹GŠwpu‰‰‰ï","‘æ69‰ņ‰ž—p•Ļ—Šw‰ït‹GŠwpu‰‰‰ï u‰‰—\eW","Œö‰vŽÐ’c–@l ‰ž—p•Ļ—Šw‰ï","  25a-E303-4",,,2022,Mar.
"SHANTING HU,XIAODONG GU,AHMED HASSAN,RUIXIAO LI,MASANORI NAKAHAMA,SATOSHI SHINADA,FUMIO KOYAMA","Ultra-compact VCSEL scanner for high power solid-state beam steering",,"Optics Express","Optica Publishing Group","Vol. 30","No. 6","pp. 8742-8749 (2022)",2022,Mar.
"Ahmed M. A. Hassan,Xiaodong Gu,Masanori Nakahama,Satoshi Shinada,Moustafa Ahmed,Fumio Koyama","High-power operations of single-mode surface grating long oxide aperture VCSELs",,"Applied Physics Letters",,"  119, 191103-8 (2021)",,,2021,Nov.
"Hameeda R Ibrahim,Ahmed M. A. Hassan,Xiaodong Gu,Satoshi Shinada,Moustafa Ahmed,Fumio Koyama","Low power consumption 1060 nm single-mode intracavity metal aperture VCSEL with transverse resonance","27th International Semiconductor Laser Conference",,,,,,2021,Oct.
"Ahmed Hassan,Xiaodong Gu,Masanori Nakahama,Satoshi Shinada,Mostafa Ahmed,Fumio Koyama","4 W Single-Mode Operation of Surface Grating VCSELs","2021 IEEE Photonics Conference",,,,,,2021,Oct.
"Shanting Hu,Xiaodong Gu,Ahmed Hassan,Masanori Nakahama,Satoshi Shinada,Fumio Koyama","Surface Grating Loaded VCSEL-integrated Amplifier/Beam Scanner with Single Mode Output Power of over 3W and Scan Resolution of over 200","27th International Semiconductor Laser Conference, ISLC2021","WP2.2 (oral) Fig. 1 (a) Schematic structure, (b) Top view of a fabricated device; (c)",,"  WP2.2 (oral)",,,2021,Oct.
"Ahmed Mohamed Ahmed Hassan,X. Gu,M. Nakahama,M. Ahmed,F. Koyama","Record High Power Single-Mode Operations of Surface Grating VCSELs","The 82nd JSAP Autumn Meeting, 2021","‘æ82‰ņ‰ž—p•Ļ—Šw‰ïH‹GŠwpu‰‰‰ï u‰‰—\eW","The Japan Society of Applied Physics","  10a-N405-7",,,2021,Sept.
"SHANTING HU,XIAODONG GU,Ahmed Hassan,Masanori Nakahama,Satoshi Shinada,Fumio Koyama","Surface Grating Loaded VCSEL-integrated Amplifier/Beam Scanner with Quasi-Single Mode Output Power of over 4W","2021 IEICE Society Conference",,,"  C-3/4-43",,,2021,Sept.
"Hameeda Ibrahim,Ahmed Hassan,Gu Xiaodong,Satoshi Shinada,Moustafa Ahmed,Fumio Koyama","Record Low Power Consumption 1060nm Single-mode Intracavity Metal Aperture VCSEL with Transverse Resonance","The 82nd JSAP Autumn Meeting, 2021",,,"  10a-N405-9",,,2021,Sept.
"H. R. Ibrahim,A. M. A. Hassan,M. Ahmed,F. Koyama","Optical feedback tolerance of transverse coupled cavity VCSELs","26th MICROOPTICS CONFERENCE",,,"  PO-33",,,2021,Sept.
"H. R Ibrahim,Ahmed M. A. Hassan,Xiaodong Gu,Satoshi Shinada,M. Ahmed,F. Koyama","1060nm Single-mode Metal-aperture VCSEL Array with Transverse Resonance and Low Power Consumption below 50 fJ/bit","2021 European Conference on Optical Communication",,,"  Tu3D.5",,,2021,Sept.
"Ahmed M. A. Hassan,Xiaodong Gu,Masanori Nakahama,Satoshi Shinada,Moustafa Ahmed,Fumio Koyama","High power surface grating slow-light VCSEL",,"Appl. Phys. Express",,"Vol. 14","  092006","pp. 1-6",2021,Aug.
"Shanting Hu,Xiaodong Gu,Ahmed Hassan,Masanori Nakahama,Satoshi Shinad,Fumio Koyama","Record High PowerSingle-mode Operation and Beam Steering ofVCSEL-lntegrated Amplifier/Beam Scanner","Optical Fiber Communication Conference",,,"  M5A.3",,,2021,June
"Shanting Hu,Xiaodong Gu,Ahmed Hassan,Masanori Nakahama,Satoshi Shinad,Fumio Koyama","Steering of VCSEL-Integrated Amplifier/Beam Scanner","Optical Fiber Communication Conference 2021(OFC2021 Virtual)",,,"  M5A.3",,,2021,June
"Hameeda R Ibrahim,Ahmed Hassan,Xiaodong Gu,Satoshi Shinada,Moustafa Ahmed,Fumio Koyama","1060nm single-mode metal aperture VCSEL array with  transverse resonance for 5km single-mode fiber transmission","Optical Fiber Communication Conference 2021 (OFC2021 Vertual)",,,"  Tu5C.1",,,2021,June
"Shanting Hu,Ahmed Hassan,Xiaodong Gu,Masanori Nakahama,Fumio Koyama","Surface Grating Loaded VCSEL with Single Mode Power of over 80 mW",,"IEICE Electronics Express",,"vol. 18","no. 11","p. 20210202",2021,June
"Shanting Hu,Xiaodong Gu,Ahmed Hassan,Masanori Nakahama,Fumio Koyama","Surface Grating VCSEL-Integrated Amplifier/Beam Scanner with High Power and Single Mode Operation","Conference on Lasers and Electro-Optics (CLEO2021)",,,"  SM1H.8",,,2021,May
"H. R Ibrahim,A. Hassan,M. Ahmed,X. Gu,F. Koyama","50Gbps Single Mode 1060nm Intracavity Metal Aperture VCSEL With Transverse Resonance","Conference on Lasers and Electro-Optics(CLEO 2021 Virtual)",,,"  SF2F.6",,,2021,May
"Ahmed M.A Hassan,Xiaodong Gu,Masanori Nakahama,Fumio Koyama,Satoshi Shinada,Moustafa Ahmed","High power and high beam quality surface grating VCSEL","Conference on Lasers and Electro-Optics(CLEO2021 virtual)",,,"  STh1G.5",,,2021,May
"Shanting Hu,Ahmed Hassan,Xiaodong Gu,Masanori Nakahama,Satoshi Shinada,Fumio Koyama","Surface grating VCSEL-integrated amplifier/beam scanner with high power and single mode operation",,"Applied Physics Express",,"Vol. 14","No. 6","p. 062005_1-5",2021,May
"Ahmed Mohamed Ahmed Hassan,Xiaodong Gu,Masanori Nakahama,Moustafa Ahmed,Fumio Koyama","High power surface grating long aperture VCSEL","‘æ68‰ņ‰ž—p•Ļ—Šw‰ït‹GŠwpu‰‰‰ï(2021 ƒIƒ“ƒ‰ƒCƒ“ŠJÃ)","‘æ68‰ņ‰ž—p•Ļ—Šw‰ït‹GŠwpu‰‰‰ï u‰‰—\eW","The Japan Society of Applied Physics","  19p-Z22-2",,,2021,Mar.
"Shanting Hu,Xiaodong Gu,Ahmed Mohamed Ahmed Hassan,Masanori Nakahama,Fumio Koyama","Surface Grating VCSEL-Integrated Amplifier/Beam Scanner with HighPower and Single Mode Operation","‘æ68‰ņ‰ž—p•Ļ—Šw‰ït‹GŠwpu‰‰‰ï (2021 ƒIƒ“ƒ‰ƒCƒ“ŠJÃ)","‘æ68‰ņ‰ž—p•Ļ—Šw‰ït‹GŠwpu‰‰‰ï u‰‰—\eW","The Japan Society of Applied Physics","  18a-Z18-1",,,2021,Mar.
"Hameeda Ibrahim,Ahmed M.A Hassan,Fumio Koyama","High-speed and Single mode 850nm Intracavity Metal Aperture VCSEL with Transverse Coupled Cavity Effect","‘æ68‰ņ‰ž—p•Ļ—Šw‰ït‹GŠwpu‰‰‰ï (2021 ƒIƒ“ƒ‰ƒCƒ“ŠJÃ)","‘æ68‰ņ‰ž—p•Ļ—Šw‰ït‹GŠwpu‰‰‰ï u‰‰—\eW","The Japan Society of Applied Physics","  19p-Z22-4",,,2021,Mar.
"H. R. Ibrahim,Ahmed M. A. Hassan,M. Ahmed,F. Koyama","Single-mode and High-speed Intracavity Metal Aperture VCSEL with Transverse Coupled Cavity Effect","The 46th European Conference on Optical Communication",,,,,,2020,Dec.
"Ahmed M. A. Hassan,Moustafa Ahmed,Masanori Nakahama,Fumio Koyama","High-power, quasi-single-mode vertical-cavity surface-emitting laser with near-diffraction-limited and low-divergence beam",,"Japanese Journal of Applied Physics",,"vol. 59","no. 9","pp. 090904 -1-4",2020,Aug.
"H.R. Ibrahim,M. Ahmed,F. Koyama","High speed modulation single mode 850 nm DTCC-VCSEL","High speed modulation single mode 850 nm DTCC-VCSEL",,,"  G-2",,,2019,Nov.
"Ahmed Mohamed Ahmed Hassan,Moustafa Ahmed,Masanori Nakahama,FUMIO KOYAMA","High power, high speed pulse generation of VCSEL amplifier","The 80th JSAP Autumn  Meeting, 2019","‘æ80‰ņ‰ž—p•Ļ—Šw‰ïH‹GŠwpu‰‰‰ï u‰‰—\eW",,"  20a-E302-7",,,2019,Sept.
"H.R. Ibrahim,MS Alghamdi,A Bakry,M. Ahmed,F. Koyama","Modelling and characterisation of the noise characteristics of the vertical cavity surface-emitting lasers subject to slow light feedback",,"Pramana",,"Volume 93","number 73",,2019,Aug.
"Ahmed Mohamed Ahmed Hassan,M. Nakahama,F. Koyama","High peak power pulsed operations of VCSEL amplifier","The 66th JSAP Spring Meeting 2019",,,"  9p-W331-1",,,2019,Mar.
"Ahmed M. A. Hassan,M. Ahmed,M. Nakahama,F. Koyama","Theoretical Investigation of Slow-Light VCSEL Amplifier",,"Journal of Experimental &Theoretical Nanotechnology",,"Vol. 2","No. 2","pp. 93 ? 104",2018,Mar.
"Ahmed Mohamed Ahmed Hassan,Moustafa Ahmed Hafez,Masanori Nakahama,FUMIO KOYAMA","Numerical analysis of Watt-class VCSEL amplifier","The 24th General Congress of the International Commission for Optics",,,"  P14-02",,,2017,Aug.
"Ahmed M. A. Hassan,M. Ahmed,Masanori Nakahama,Fumio Koyama","Numerical analysis of high output slow light VCSEL amplifier","The 64rd JSAP Spring Meeting,2017",,,"  15p-422-2",,,2017,Mar.
"Hameeda Ragab Ibrahim,Mohamed Ahmed,Fumio Koyama","Modulation Bandwidth Enhancement of Double Transverse Coupled Cavity VCSELs","21st MICROOPTICS CONFERENCE",",MOC2016",,"  13A-7",,,2016,Oct.