1. H. Yagi, T. Sano, K. Ohira, D. Plumwongrot, T. Maruyama, A. Haque, S. Tamura and S. Arai, “GaInAsP/InP Partially Strain-Compensated Multiple-Quantum-Wire Lasers Fabricated by Dry Etching and Regrowth Processes,” Jpn. J. Appl. Phys., vol. 43, no. 6A, pp. 3401-3409, Jun. 2004.

2. A. Haque, T. Maruyama, H. Yagi, T. Sano, D. Plumwongrot and S. Arai, “Anomalous in-plane polarization dependence of optical gain in compressively strained GaInAsP/InP quantum wire lasers,” IEEE J. Quantum Electron., vol. 40, no. 9, pp. 1344-1351, Sep. 2004.

3. K. Ohira, T. Murayama, M. Hirose, H. Yagi, S. Tamura and S. Arai, “Low-threshold and high-efficiency operation of 1.5 mm distributed reflector laser with DFB grating and Q-wire DBR sections,” Electron. Lett., vol. 40, no. 20, pp. 1269-1271, Sep. 2004.

4. H. Yagi, T. Sano, K. Miura, D. Plumwongrot, K. Ohira, T. Maruyama and S. Arai, “GaInAsP/InP long-wavelength lasers with strain-compensated quantum-wire active regions and SiO2/semiconductor reflectors,” IEICE Electronics Express, vol. 1, no. 17, pp. 540-544, Dec. 2004.

5. K. Ohira, T. Murayama, H. Yagi, S. Tamura, and S. Arai, “Low-Threshold Distributed Reflector Laser Consisting of Wide and Narrow Wirelike Active Regions,” IEEE Photon. Technol. Lett., vol. 17, no. 2, pp. 264-266, Feb. 2005.
6. K. Ohira, T. Murayama, S. Tamura and S. Arai, “Low-Threshold and High-Efficiency Operation of Distributed Reflector Lasers with Width-Modulated Wirelike Active Regions,” submitted to IEEE J. Select. Topics Quantum Electron. on Semiconductor Laser.

1. H. Yagi, T. Sano, K. Ohira, D. Plumwongrot, T. Maruyama, A. Haque and S. Arai, “Reliable RT-CW operation of GaInAsP/InP multiple-quantum-wire lasers fabricated by dry etching and regrowth method,” Conference on Lasers and Electro Optics/International Quantum Electronics Conference (CLEO/IQEC 2004), CThL4, pp. 138, San Francisco, Cal. (USA), May 2004.

2. H. Yagi, T. Sano, K. Ohira, K. Miura, T. Maruyama, A. Haque and S. Arai, “GaInAsP/InP Multiple-Quantum-Wire Lasers with Narrow (14 nm) Quantum-Wire Structure,” The 16th Indium Phosphide and Related Materials Conference (IPRM2004), TuA3-4, pp. 100-103, Kagoshima (Japan), May/Jun. 2004.

3. K. Ohira, T. Murayama, M. Hirose, H. Yagi, S. Tamura, A. Haque and S. Arai, “Low-Threshold and High Efficiency Distributed Reflector Laser with Wirelike Active Regions and Quantum-Wire DBR,” The 16th International Conference on Indium Phosphide and Related Materials (IPRM2004), WA4-6, pp. 562-563, Kagoshima (Japan), May/Jun. 2004.

4. H. Yagi, T. Sano, K. Miura, T. Maruyama, A. Haque and S. Arai, “1.5 mm Wavelength GaInAsP/InP Multiple-Quantum-Wire Lasers with SiO2/Semiconductor Reflector,” The 9th Optoelectronics and Communications Conference (OECC2004), 14E1-4, pp. 522-523, Yokohama (Japan), Jul. 2004.

5. K. Ohira, T. Murayama, M. Hirose, H. Yagi, S. Tamura and S. Arai, “Low-Threshold Operation of Distributed Reflector Laser with Width Modulated Wirelike Active Regions,” The 19th IEEE International Semiconductor Laser Conference (ISLC2004), FB5, pp. 133-134, Shimane (Japan), Sep. 2004.

6. S. Arai, K. Ohira and T. Murayama, “Novel Integration Technologies for Photonic Devices - Low Threshold Single-Mode Lasers by Using Lateral Quantum Size Effect,” The 17th Annual Meeting of the IEEE Lasers & Electro-Optics Society (LEOS2004), WQ4, pp. 603-604, Puerto Rico, Nov. 2004.

7. S. Arai, H. Yagi, K. Ohira, T. Maruyama and S. Tamura, “GaInAsP/InP quantum-wire lasers and distributed reflector lasers with wirelike active regions by lithography and regrowth,” Photonics WEST Optoelectronics 2005, 5738-36, San Jose, Cal. (USA), Jan. 2005.

8. H. Yagi, K. Miura, D. Plumwongrot, Y. Nishimoto, K. Ohira, T. Maruyama and S. Arai, “Low Threshold Current 1540 nm Wavelength GaInAsP/InP Quantum-Wire Distributed-Feedback Lasers,” to be presented at The 17th Indium Phosphide and Related Materials Conference (IPRM2005), Glasgow (UK), May 2005.

9. K. Ohira, T. Murayama, H. Yagi, S. Tamura and S. Arai, “Low Threshold Current Distributed-Reflector Laser with Phase-Shifted DFB and High-Reflection DBR Sections,” to be presented at The 17th Indium Phosphide and Related Materials Conference (IPRM2005), Glasgow (UK), May 2005.

10. T. Maruyama, D. Plumwongrot, H. Yagi, K. Miura, Y. Nishimoto and S. Arai, “Polarization Anisotropic Characteristics of GaInAsP/InP Quantum-Wire Lasers - Threshold Current and Gain Spectrum-” to be presented at The 17th Indium Phosphide and Related Materials Conference (IPRM2005), Glasgow (UK), May 2005.

1. H. Yagi, T. Sano, D. Plumwongrot, K. Miura, K. Ohira, T. Maruyama, A. Haque and S. Arai, “GaInAsP/InP Strain-Compensated Multiple-Quantum-Wire Lasers Fabricated by CH4/H2 Dry Etching and Regrowth Method,” 「CH4/H2ドライエッチングと埋め込み再成長法によるGaInAsP/InP歪補償多層量子細線レーザ」 Technical Report of IEICE, OPE2004-18/LQE2004-16 (2004-07), pp.1-6, Tokyo (Japan), Jul. 2004.

2. K. Ohira, T. Murayama, M. Hirose, H. Yagi, S. Tamura, A. Haque and S. Arai, “Low-threshold and high efficiency operation of distributed reflector (DR) laser with wirelike active DFB and quantum-wire passive sections,” 「活性層分離型DFBと量子細線DBRを有する分布反射型レーザの低電流・高効率動作」 Technical Report of IEICE, OPE2004-19, LQE2004-17 (2004-07), pp. 7-10, Tokyo (Japan), July 2004.

1. T. Murayama, K. Ohira, M. Hirose, H. Yagi, S. Tamura and S. Arai, “Low-threshold Operation of Distributed Reflector (DR) Laser Using Wirelike Active Region,” 「細線状活性層を用いた分布反射型(DR)レーザの低しきい値動作」 The 51st Spring Meeting, 2004; The Japan Society of Applied Physics and Related Societies, 30a-ZZ-2, Digest III -p. 1259, Tokyo, Mar. 2004.

2. T. Sano, H. Yagi, K. Ohira, D. Plumwongrot, T. Maruyama, A. Haque and S. Arai, “GaInAsP/InP Strain-Compensated 5-Layered Quantum-Wire Lasers with Narrow Wire (14nm) Structures,” 「狭細線(14nm)構造を有するGaInAsP/InP歪補償5層量子細線レーザ」The 51st Spring Meeting, 2004; The Japan Society of Applied Physics and Related Societies, 31a-ZZ-4, Digest III -p. 1270, Tokyo, Mar. 2004.

3. H. Yagi, T. Sano, D. Plumwongrot, K. Miura, T. Maruyama, A. Haque and S. Arai, “TEM Observation of Regrown Interfaces for GaInAsP/InP Strain-Compensated Multiple-Quantum-Wire Lasers,” 「GaInAsP/InP歪補償多層量子細線レーザの再成長界面のTEM観測」The 51st Spring Meeting, 2004; The Japan Society of Applied Physics and Related Societies, 31a-ZZ-5, Digest III -p. 1270, Tokyo, Mar. 2004.

4. K. Miura, H. Yagi, T. Sano, D. Plumwongrot, T. Maruyama, A. Haque and S. Arai, “GaInAsP/InP Strain-Compensated Multiple-Quantum-Wire Lasers with SiO2/Semiconductor Reflector,” 「SiO2/半導体反射鏡を有するGaInAsP/InP歪補償多層量子細線レーザ」The 51st Spring Meeting, 2004; The Japan Society of Applied Physics and Related Societies, 31a-ZZ-6, Digest III -p. 1271, Tokyo, Mar. 2004.

5. K. Ohira, T. Murayama, M. Hirose, H. Yagi, A. Haque, S. Tamura and S. Arai, “Low-threshold operation of distributed reflector laser with width modulated wirelike active regions,” 「線幅変調回折格子を有する分布反射型(DR)レーザの低しきい値動作」The 65th Autumn Meeting, 2004; The Japan Society of Applied Physics, 1a-ZN-8, Digest III -p. 1019, Sendai, Sep. 2004.

6. T. Maruyama, D. Plumwongrot, H. Yagi, K. Miura and S. Arai, “Wire Direction Dependence of GaInAsP/InP Strain-Compensated Multiple-Quantum-Wire Lasers,” 「GaInAsP/InP 歪補償多層量子細線レーザの細線方向依存性」 The 65th Autumn Meeting, 2004; The Japan Society of Applied Physics, 1a-ZN-14, Digest III -p. 1021, Sendai, Sep. 2004.

7. K. Ohira, T. Murayama, S. M. Ullah, H. Yagi, S. Tamura and S. Arai, “Integration technique by using lateral quantum confinement effect in quantum wires and its application to lasers for optical communication,” 「量子細線活性層の横方向量子閉じ込めを用いた集積法とその光通信用レーザへの応用」 The 52nd Spring Meeting, 2005; The Japan Society of Applied Physics and Related Societies, 29a-ZH-1, Saitama, Mar. 2005.

8. K. Miura, H. Yagi, Y. Nishimoto, D. Plumwongrot, K. Ohira, T. Maruyama and S. Arai, “Room Temperature-Continuous Wave Operation of 1540 nm Wavelength GaInAsP/InP Strain-Compensated Quantum-Wire DFB Lasers,”「1540 nm波長帯GaInAsP/InP歪補償量子細線DFBレーザの室温連続動作」The 52nd Spring Meeting, 2005; The Japan Society of Applied Physics and Related Societies, 29p-V-10, Saitama, Mar. 2005.

9. D. Plumwongrot, T. Maruyama, H. Yagi, K. Miura, Y. Nishimoto, S. Tamura and S. Arai, “Investigation of Size Distribution in Quantum Wire Pattern by Electron Beam Lithography,”「EB露光法による量子細線におけるサイズ分布の研究」The 52nd Spring Meeting, 2005; The Japan Society of Applied Physics and Related Societies, 30p-YW-11, Saitama, Mar. 2005.

10. H. Yagi, K. Miura, Y. Nishimoto, D. Plumwongrot, K. Ohira, T. Maruyama and S. Arai, “Low Threshold Current Operation of GaInAsP/InP Strain-Compensated Quantum-Wire DFB Lasers,”「GaInAsP/InP歪補償量子細線DFBレーザの低しきい値電流動作」The 52nd Spring Meeting, 2005; The Japan Society of Applied Physics and Related Societies, 31p-ZH-1, Saitama, Mar. 2005.

11. T. Murayama, K. Ohira, S. M. Ullah, H. Yagi, S. Tamura and S. Arai, “Low threshold current distributed-reflector laser with phase-shifted DFB and high-reflection DBR sections,” 「位相シフトDFB領域と量子細線DBR領域を集積した分布反射型(DR)レーザの低しきい値動作」 The 52nd Spring Meeting, 2005; The Japan Society of Applied Physics and Related Societies, 31p-ZH-2, Saitama, Mar. 2005.

1. T. Okamoto, T. Yamazaki, S. Sakamoto, S. Tamura and S. Arai, “Low-Threshold Membrane BH-DFB Laser Arrays With Precisely Controlled Wavelength Over a Wide Range”, IEEE Photon. Technol. Lett., vol. 16, no. 5, pp. 1242-1244, May 2004.

2. S. Sakamoto, T. Okamoto, T. Yamazaki, S. Tamura and S. Arai, “Multiple-Wavelengths Membrane BH-DFB Laser Arrays”, submitted to IEEE J. Select. Topics in Quantum Electron., 2005.

1. S. Arai, H.-C. Kim and H. Kanjo, “1.5mm-wavelength single mode semiconductor lasers with deeply etched vertical grating,” (Invited), Conference on Lasers and Electro Optics/International Quantum Electronics Conference (CLEO/IQEC 2004), CWC3, p. 118, San Francisco, Cal. (USA), May 2004.

2. T. Okamoto, T. Yamazaki, S. Sakamoto, S. Tamura and S. Arai, “Short Cavity Membrane BH-DFB Laser with ?/4 Phase Shift”, 16th Indium Phosphide and Related Materials Conf. (IPRM2004), WA-3-3, pp. 519-522, Kagoshima, May, 2004.

3. T. Okamoto, T. Yamazaki, S. Sakamoto, S. Tamura and S. Arai, “Improved Temperature Insensitivity of Membrane BH-DFB Laser with Polymer Cladding Layers”, The 9th Optoelectronics and Communication Conference (OECC2004), 14E2-3, pp. 528-529, Yokohama, Jul., 2004.

4. T. Okamoto, T. Yamazaki, S. Sakamoto, S. Tamura and S. Arai, “Multiple-Wavelengths Low-Threshold Membrane BH-DFB Laser Arrays”, 2004 IEEE 19th International Semiconductor Laser Conference(ISLC2004), WC1, pp. 20-21, Matsue, Sep., 2004.

1. T. Okamoto, T. Yamazaki, S. Sakamoto, S. Tamura and S. Arai, “Polymer Cladded Semiconductor Membrane BH-DFB Lasers”, 「誘電体クラッド半導体薄膜BH-DFBレーザ」 Technical Report of IEICE, OPE2004-20 (2004-07), pp.11-14, Tokyo (Japan), Jul. 2004.

1. T. Okamoto, T. Yamazaki, S. Sakamoto, S. Tamura and S. Arai, “Athermal Effect of Polymer Cladded Membrane BH-DFB Laser”, 「誘電体クラッドを用いた半導体薄膜BH-DFBレーザにおけるアサーマル効果の観測」, The 51st Spring Meeting, 2004; The Japan Society of Applied Physics and Related Societies., 30a-ZZ-5, Digest III -p. 1260, Tokyo, Mar. 2004.

2. T. Yamazaki, T. Okamoto, S. Sakamoto, S. Tamura and S. Arai, “Multiple Wavelength Membrane BH-DFB Laser Arrays”, 「一括励起半導体薄膜BH-DFB多波長レーザアレイの試作」, The 51st Spring Meeting, 2004; The Japan Society of Applied Physics and Related Societies., 30a-ZZ-6, Digest III -p. 1260, Tokyo, Mar. 2004.

3. S. Sakamoto, T. Okamoto, T. Yamazaki, S. Tamura and S. Arai, “Membrane BH-DFB Laser Array with Exposure Control”, 「EB露光量制御による微小波長間隔半導体薄膜BH-DFBレーザアレイ」, The 65th Autumn Meeting, 2004; The Japan Society of Applied Physics., 1a-ZN-9, Digest III -p. 1019, Sendai, Sep. 2004.

4. T. Okamoto, S. Sakamoto, T. Yamazaki, S. Tamura and S. Arai, “Membrane BH-DFB Laser with High Index Difference Waveguide”, 「高屈折率差導波路構造を用いた半導体薄膜BH-DFBレーザ」, The 65th Autumn Meeting, 2004; The Japan Society of Applied Physics., 1a-ZN-10, Digest III -p. 1020, Sendai, Sep. 2004.

5. S. Sakamoto, T. Okamoto, T. Yamazaki, H. Kawashima, Tang Jing-Long, S. Tamura and S. Arai, “Membrane BH-DFB Laser Array with Asperity Corrugation Structure”, 「凹凸形状回折格子を用いた半導体薄膜BH-DFBレーザアレイ」, The 52nd Spring Meeting, 2005; The Japan Society of Applied Physics and Related Societies., 31p-ZH-5, Saitama, Mar./Apr. 2005.

6. H. Kawashima, S. Sakamoto, T. Okamoto, T. Yamazaki, Tang Jing-Long, S. Tamura and S. Arai, “Lateral-Mode Control of Membrane BH-DFB Lasers with Narrow Stripe”, 「狭ストライプ半導体薄膜BH-DFBレーザの横モード制御」, The 52nd Spring Meeting, 2005; The Japan Society of Applied Physics and Related Societies.,31p-ZH-6, Saitama, Mar./Apr. 2005.