"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.