論文

• Hameeda R Ibrahim, Ahmed H. Hassan, Xiaodong Gu, Moustafa Ahmed, Fumio Koyama. Enhanced High-Frequency Modulation of Single-mode 850 nm VCSELs via Dual Transverse-Cavity Integration, IEICE Electronics Express, Vol. 21, No. 4, pp. 1-4, Feb. 2024.
• 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, June 2022.
• 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), Mar. 2022.
• 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), Nov. 2021.
• 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, Aug. 2021.
• 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, June 2021.
• 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, May 2021.
• 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, Aug. 2020.
• 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, Aug. 2019.
• 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, Mar. 2018.

国際会議発表 (査読有り)

• 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), May 2022.
• 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, Oct. 2021.
• 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), Oct. 2021.
• 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, Oct. 2021.
• H. R. Ibrahim, A. M. A. Hassan, M. Ahmed, F. Koyama. Optical feedback tolerance of transverse coupled cavity VCSELs, 26th MICROOPTICS CONFERENCE, PO-33, Sept. 2021.
• 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, Sept. 2021.
• 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, June 2021.
• 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, June 2021.
• 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, June 2021.
• 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, May 2021.
• 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, May 2021.
• 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, May 2021.
• 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, Dec. 2020.
• 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, Nov. 2019.
• 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, Aug. 2017.
• Hameeda Ragab Ibrahim, Mohamed Ahmed, Fumio Koyama. Modulation Bandwidth Enhancement of Double Transverse Coupled Cavity VCSELs, 21st MICROOPTICS CONFERENCE, ,MOC2016, 13A-7, Oct. 2016.

国内会議発表 (査読なし・不明)

• 棚橋 和真, 藤岡 威吹, Ahmed M. A. Hassan, 顧 暁冬, 小山 二三夫. VCSEL ビーム増幅デバイスによる LiDAR システム検討V, 第69回応用物理学会春季学術講演会, 第69回応用物理学会春季学術講演会 講演予稿集, 公益社団法人 応用物理学会, 25a-E303-4, Mar. 2022.
• 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, Sept. 2021.
• 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, 第82回応用物理学会秋季学術講演会 講演予稿集, The Japan Society of Applied Physics, 10a-N405-7, Sept. 2021.
• 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, Sept. 2021.
• Hameeda Ibrahim, Ahmed M.A Hassan, Fumio Koyama. High-speed and Single mode 850nm Intracavity Metal Aperture VCSEL with Transverse Coupled Cavity Effect, 第68回応用物理学会春季学術講演会 (2021 オンライン開催), 第68回応用物理学会春季学術講演会 講演予稿集, The Japan Society of Applied Physics, 19p-Z22-4, Mar. 2021.
• Ahmed Mohamed Ahmed Hassan, Xiaodong Gu, Masanori Nakahama, Moustafa Ahmed, Fumio Koyama. High power surface grating long aperture VCSEL, 第68回応用物理学会春季学術講演会(2021 オンライン開催), 第68回応用物理学会春季学術講演会 講演予稿集, The Japan Society of Applied Physics, 19p-Z22-2, Mar. 2021.
• 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, 第68回応用物理学会春季学術講演会 (2021 オンライン開催), 第68回応用物理学会春季学術講演会 講演予稿集, The Japan Society of Applied Physics, 18a-Z18-1, Mar. 2021.
• 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, 第80回応用物理学会秋季学術講演会 講演予稿集, 20a-E302-7, Sept. 2019.
• 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, Mar. 2019.
• 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, Mar. 2017.

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