"Keisuke Kondo,Xiaodong Gu,Zeuku Ho,Akihiro Matsutani,Fumio Koyama","Two-Dimensional Beam Steering Device Based on VCSEL Slow-Light Waveguide Array with Amplifier Function","Optical Fiber Communication Conference and Exhibition 2019",,," M4E.4",,,2019,Mar. "Zeuku Ho,Keisuke Shimura,Keisuke Kondo,Xiaodong Gu,Akihiro Matsutani,Fumio Koyama","High Resolution Active Beam Scanner Based on VCSEL Amplifier","31st Annual Conference of the IEEE Photonics Society",,," MC2.2",,"pp. 67-68",2018,Oct. "Zeuku Ho,Junichiro Hayakawa,Keisuke Shimura,Keisuke Kondo,Xiaodong Gu,Akihiro Matsutani,Akemi Murakami,Fumio Koyama","High Power and High Beam Quality VCSEL Amplifier","2018 International Semiconductor Laser Conference",,," WC3",,"pp. 229-230",2018,Sept. "Keisuke Kondo,Xiaodong Gu,Zeuku Ho,Akihiro Matsutani,Fumio Koyama","Two-Dimensional Beam Steering Using Slow-Light Waveguide Deflector Array with Optical Gain","Conference on Lasers and Electro-Optics 2018",,," SM31.4",,,2018,May "‹ß“¡Œ\—S,ŒÚ‹Å“~,’†?³“,‹–݈®,¬ŽR“ñŽO•v","‘½‘w–ŒƒXƒ[ƒ‰ƒCƒg“±”g˜Hƒr[ƒ€•ÎŒüŠí‚ð—p‚¢‚½LiDARƒVƒXƒeƒ€‚ÌŒŸ“¢ (II) --- 2ŽŸŒ³ƒr[ƒ€ƒXƒLƒƒƒ“‚ÌŽÀØ","‘æ65‰ñ ‰ž—p•¨—Šw‰ï t‹GŠwpu‰‰‰ï",,," 18a-B203-9",,,2018,Mar. "Keisuke Kondo,Tomoki Tatebe,Shoji Hachuda,Hiroshi Abe,Fumio Koyama,Toshihiko Baba","Fan-beam steering device using a photonic crystal slow-light waveguide with surface diffraction grating",,"Optics Letters",,"Vol. 42","No. 23","pp. 4990-4993",2017,Dec. "‹ß“¡Œ\—S,ŒÚ‹Å“~,’†?³“,‹–݈®,¬ŽR“ñŽO•v","DBRƒXƒ[ƒ‰ƒCƒg“±”g˜Hƒr[ƒ€•ÎŒüŠí‚ð—p‚¢‚½LiDARƒVƒXƒeƒ€‚ÌŒŸ“¢","‘æ78‰ñ‰ž—p•¨—Šw‰ïH‹GŠwpu‰‰‰ï",,," 6p-C14-9",,,2017,Sept. "keisuke Kondo,Tomoki Tatebe,Xiaodong Gu,Fumio Koyama,Toshihiko Baba","Photonic Crystal Slow-Light Beam Steering Device With Surface Diffraction Grating","The 24th General Congress of the International Commission for Optics",,," Tu2K-02",,,2017,Aug.