レーザー新世代研究センター・基盤理工学専攻　白川晃研究室

研究業績

1. M. Chen, X. Fan, A. Shirakawa, K. Ueda, C. B. Olausson, J. K. Lyngsø, and J. Broeng, “Single frequency amplification by ytterbium doped photonic bandgap fiber at 1178 nm,” The 8th Asia Pacific Laser Symposium (APLS 2012), paper P1.19, Huangshan, China, May 28, 2012.
2. X. Fan, M. Chen, A. Shirakawa, K. Ueda, C. B. Olausson, and J. Broeng, “53.6 W, 1178 nm Yb-doped photonic bandgap fiber oscillator,” CLEO 2012, paper CM2N.5, San Jose, USA, May 7, 2012.
3. H. Nakao, A. Shirakawa, K. Ueda, H. Yagi, and T. Yanagitani, “Efficient CW laser operation of Yb:LuAG ceramic laser,” CLEO 2012, paper CM2D.4, San Jose, USA, May 7, 2012.
4. X. Fan, M. Chen, A. Shirakawa, and K. Ueda, “High power solid-core photonic bandgap fiber laser at 1178 nm,” Workshop on Fiber Laser and Solid-state Laser at SIOM, paper 2, Shanghai, China, March 13, 2012.
5. A. Shirakawa, M. Chen, X. Fan, K. Ueda, C. B. Olausson, J. K. Lyngsø, and J. Broeng, “Single-frequency photonic bandgap fiber amplifier at 1178 nm,” Advanced Solid-State Photonics 2012, San Diego, USA, paper AT1A.5, Jan. 31, 2012.
6. M. Tokurakawa, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, K. Beil, C. Kränkel, K. Petermann, and G. Huber, “Continuous wave and mode-locked Yb3+:Y2O3 ceramic thin-disk laser,” Advanced Solid-State Photonics 2012, San Diego, USA, paper AM2A.4, Jan. 30, 2012.
7. M. Chen, A. Shirakawa, Y. Yamahara, K. Ueda, C. B. Olausson, J. K. Lyngsø, and J. Broeng, “High-power single-frequency photonic bandgap fiber amplifier at 1178 nm,” Photonics West/LASE 2012, San Francisco, USA, paper 8237-20, Jan. 26, 2012.
8. A. Shirakawa, H. Yamada, M. Matsumoto, M. Tokurakawa, and K. Ueda, “Phase-locked multi-core photonic crystal fiber laser by end-sealing,” Photonics West/LASE 2012, San Francisco, USA, paper 8237-2, Jan. 23, 2012.
9. A. Shirakawa, M. Matsumoto, T. Kobayashi, M. Tokurakawa, and K. Ueda, “Q-switched multicore photonic crystal fiber laser phase-locked by end-seal technique,” CLEO-Pacific Rim 2011, paper 3240-CT-4, Sydney, Australia, Aug. 30, 2011.
10. H. Nakao, A. Shirakawa, K. Ueda, L. Bohatý, P. Becker, and A. A. Kaminskii, ”Na,Nd co-doped Ca2MgSi2O7 laser,” CLEO/Europe 2011, paper CA.P.17, Munich, Germany, May 22, 2011.
11. A. Shirakawa, M. Chen, Y. Yamahara, K. Ueda, C. B. Olausson, K. Lyngsø, and J. Broeng, “Single-frequency photonic bandgap fiber amplification,” CLEO 2011, paper CThU6, Baltimore, USA, May 5, 2011.
12. M. Matsumoto, T. Kobayashi, A. Shirakawa, and K. Ueda, “All-fiber phase-locked multi-core photonic crystal fiber laser,” Advanced Solid-State Photonics 2011, paper AMC3, Istanbul, Turkey, Feb. 14, 2011.
13. A. Shirakawa, T. Kobayashi, M. Matsumoto, and K. Ueda, “All-fiber phase-locked multi-core photonic crystal fiber laser with fill-factor enhancement and high efficiency,” CLEO/QELS 2010, paper CThO2, San Jose, May 20, 2010.
14. C. B. Olausson, A. Shirakawa, M. Chen, J. K. Lyngsø, J. Broeng, K. P. Hansen, A. Bjarklev, and K. Ueda, “167 W, 1178 nm Ytterbium-doped photonic bandgap fiber amplifier with power scalability,” CLEO/QELS 2010, paper CTuC2, San Jose, USA, May 18, 2010.
15. N. Inoue, A. Shirakawa, and K. Ueda, “Photodarkening and photobleaching of Yb-doped fibers by laser diodes,” CLEO/QELS 2010, paper CMGG5, San Jose, USA, May 17, 2010.
16. H. Kurokawa, M. Tokurakawa, A. Shirakawa, K. Ueda, A. A. Kaminskii, S. Kuretake, N. Tanaka, Y. Kintaka, and K. Kageyama, “Diode-pumped mode-locked Nd3+-doped Ba(Zr,Mg,Ta)O3 ceramic laser,” CLEO/QELS 2010, paper CMNN4, San Jose, USA, May 17, 2010.
17. A. Shirakawa, C. B. Olausson, M. Chen, K. Ueda, J. K. Lyngsø, and J. Broeng, “Power-scalable photonic bandgap fiber sources with 167 W, 1178 nm and 14.5 W, 589 nm radiations,” Advanced Solid-State Photonics 2010, paper APDP6, San Diego, USA, February 1, 2010. (postdeadline paper)
18. M. Tokurakawa, A. Shirakawa, and K. Ueda, “Estimation of gain bandwidth limitation of short pulse duration based on competition of gain saturation,” Advanced Solid-State Photonics 2010, paper AMB16, San Diego, USA, February 1, 2010.
19. A. Shirakawa, H. Maruyama, K. Ueda, C. B. Olausson, J. K. Lyngsø, and J. Broeng, “Power-scalable long-wavelength Yb-doped photonic bandgap fiber sources,” Photonics West/LASE 2010, paper 7580-38, San Francisco, January 27, 2010.
20. M. P. Thirugnanasambandam, Y. Senatsky, A. Shirakawa, and K. Ueda, “Generation of beams with near-diffraction free propagation characteristics in Yb:YAG laser using an intracavity lens with spherical aberration,” The 5th Asian Symposium on Intense Laser Science (ASILS-5), paper S-09, Hanoi, Vietnam, Dec. 2-5, 2009.
21. C. A. Codemard, A. Shirakawa, J. K.Sahu, S. Yoo, Y. Jeong, and J. Nilsson, “Thermal resilience of polymer-coated double-clad fiber,” CLEO/Europe-EQEC 2009, paper CJP.5-THU, Munich, June 17, 2009.
22. J. Dong, A. Shirakawa, and K. Ueda, “Crystalline-orientation Selected Linearly Polarized Yb:YAG Microchip Laser,” CLEO/Europe-EQEC 2009, paper CA12.6-THU, Munich, June 18, 2009.
23. H. Maruyama, A. Shirakawa, K. Ueda, C. B. Olausson, J. K. Lyngsø, and J. Broeng, “1178 nm Yb-doped Solid-core Photonic Bandgap Fiber Laser Source for 589nm Generation,” CLEO/Europe-EQEC 2009, paper CJ4.2-WED, Munich, June 17, 2009.
24. J. Li, K. Ueda, A. Shirakawa, and L. Zhong, “Passively Q-switched Nd:YAG microchip laser emits radially and azimuthally polarized light,” CLEO/Europe-EQEC 2009, paper CA5.6-TUE, Munich, June 16, 2009.
25. Yu. Senatsky, A. Shirakawa, K. Ueda, “Generation of near diffraction free beams in Yb:YAG laser using an intracavity lens with spherical aberration,” CLEO/Europe-EQEC 2009, paper CA1.5-MON, Munich, June 15, 2009.
26. M. Tokurakawa, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. Kaminskii, “Continuous-wave and mode-locked laser operations based on Yb3+:(YGd2)Sc2(GaAl2)O12 disordered ceramic,” CLEO/QELS 2009, paper CFO3, Baltimore, June 5, 2009.
27. M. Tokurakawa, A. Shirakawa, K. Ueda, R. Peters, S. T. Frederich-Thornton, K. Petermann, G. Huber, H. Yagi, T. Yanagitani, and A. A. Kaminskii, “Ultra-Short Pulses from Diode‐Pumped Yb3+-Doped Crystal and Ceramic Lasers with High Average Power,” Advanced Solid-State Photonics 2009, paper MC3, Denver, Feb. 2, 2009.
28. A. Shirakawa, H. Maruyama, K. Ueda, C. B. Olausson, J. K. Lyngsø, B. Mangan, and J. Broeng, “High-power Yb-doped solid-core photonic bandgap fiber amplifier at 1150-1200nm,” Photonics West/LASE 2009, paper 7195-19, San Jose, January 27, 2009.
29. H. Maruyama, A. Shirakawa, K. Ueda, C. B. Olausson, J. K. Lyngsø, B. Mangan, and J. Broeng, “High-Power Yb-Doped Solid-Core Photonic Bandgap Fiber Amplifier at 1150-1200nm,” Frontiers in Optics/Laser Science XXIV Conference 2008, The 92th OSA Annual Meeting, paper FTuG5 (Oct 22), Rochester, October 19-23, 2008.
30. J.-F. Bisson, A. Shirakawa, K. Ueda, Yu. Senatsky, Circular modes selection in Yb:YAG laser using an intracavity lens with spherical aberration, TuR1-11, Laser Optics 2008, St. Petersburg, Russia, June 24, 2008.
31. C. A. Codemard, A. Shirakawa, J. N. Maran, J .K. Sahu, and J. Nilsson, “Power and energy-scaling of cladding-pumped Raman fibre lasers sources,” Photonics North 2008, Montréal, June 2-4, 2008.
32. M. Tokurakawa, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, A. Kaminskii, “Diode-pumped sub 60-fs Kerr-lens mode-locked Yb-doped sesquioxide combined ceramic laser,” CLEO/QELS 2008, paper CFP6, San Jose, May 9, 2008.
33. A. Shirakawa, C. A. Codemard, J. Ji, K. K. Cheng, A. Malinowski, D. J. Richardson, J .K. Sahu, and J. Nilsson, “High-brightness 210 mJ pulsed Raman fiber source,” CLEO/QELS 2008, paper CTuL1, San Jose, May 6, 2008.
34. Akira Shirakawa, Hiroyuki Suzuki, Motoyuki Tanisho, and Ken-ichi Ueda, “Yb-ASE-Free Er Amplification in Short-Wavelength Filtered Er:Yb Photonic-Crystal Fiber,” Optical Fiber Communication Conference 2008, paper OThN2, San Diego, Feb. 2008.
35. M. Tokurakawa, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. Kaminskii, “Diode-pumped Kerr-lens mode-locked Yb-doped sesquioxide ceramic laser,” APLS 2008, 31Bp4, Nagoya, Japan, Jan. 31, 2008.
36. M. Tokurakawa, H. Kurokawa, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. Kaminskii, “Diode-pumped Kerr-lens mode-locked Yb3+:Sc2O3 and Yb3+:Y2O3 combined active media ceramic laser,” Advanced Solid-State Photonics 2008, postdeadline paper MG2, Nara, Japan, Jan. 28, 2008.
37. M. Tokurakawa, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. Kaminskii, “Diode-pumped 65-fs Kerr-lens mode-locked combined Yb-doped sesquioxide ceramic laser,” Advanced Solid-State Photonics 2008, WB16, Nara, Japan, Jan. 30, 2008.
38. M. Tokurakawa, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. Kaminskii, “Diode-pumped sub 100-fs Kerr-lens mode-locking Yb3+:Sc2O3 ceramic laser with high average power,” Advanced Solid-State Photonics 2008, WB9, Nara, Japan, Jan. 30, 2008.
39. J. Dong, S. T. Frederich, M. Priamvadha, A. Shirakawa, and K. Ueda, “Effect of ytterbium concentration on Yb:YAG microchip laser performance at ambient temperature,” COE International Symposium, P39, Chofu, Dec. 15, 2007.
40. H. Maruyama, A. Shirakawa, and K. Ueda, “1178nm linearly polarized all fiber laser,” COE International Symposium, P37, Chofu, Dec. 15, 2007.
41. J. Dong, M. Priamvadha, A. Shirakawa, and K. Ueda, “Efficient composite ceramics self-Q-switched microchip lasers, COE International Symposium,” P36, Chofu, Dec. 15, 2007.
42. M. Tokurakawa, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. A. Kaminskii, “Diode-pumped Kerr-lens mode-locked sesquioxide ceramic lasers,” COE International Symposium, Chofu, Dec. 15, 2007.
43. M. Tokurakawa, A. Shirakawa, K. Ueda, H. Yagi, and T. Yanagitani, and A. A. Kaminskii, “Diode-pumped Kerr-lens mode-locked Yb3+:Sc2O3 ceramic laser,” 3rd Laser Ceramic Symposium, O-L-2, Paris, France, Oct. 9, 2007.
44. H. Maruyama, A. Shirakawa, and K. Ueda, “1178nm linearly-polarized all fiber laser,” CLEO/Pacific Rim 2007, paper TuA4, Seoul, Aug. 2007.
45. J. Dong, A. Shirakawa, K. Ueda, H. Yagi, and T. Yanagitani, “Passively Q-switched Yb:YAG/Cr:YAG ceramics miniature lasers with peak power >150 kW and nearly diffraction-limited beam quality,” paper CA8-3-WED, CLEO/Europe-IQEC 2007, Munich, June 20, 2007.
46. J. Dong, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. A. Kaminskii, “Composite Yb:YAG/Cr:YAG ceramics self-Q-switched laser,” CLEO/QELS 2007, paper CFJ5, Baltimore, May 11 2007.
47. Akira Shirakawa, Makoto Kamijo, Jun Ota, Ken-ichi Ueda, Kiminori Mizuuchi, Hiroyuki Furuya, and Kazuhisa Yamamoto, “Linearly-polarized Yb-doped Fiber Laser in an All-fiber Configuration,” CLEO/QELS 2007, paper CMC5, Baltimore, May 7 2007.
48. Akira Shirakawa, Takayuki Atsumi, Motoyuki Tanisho, and Ken-ichi Ueda, “Single-Shot Fiber Dispersionmetry,” Optical Fiber Communication Conference 2007, paper OThO1, Anaheim, March 29, 2007.
49. J. Dong, A. Shirakawa, K. Ueda, H. Yagi, and T. Yanagitani, and A.A. Kaminskii, “Ambient-temperature 4-W Yb:YAG ceramic microchip lasers at both 1030 nm and 1049 nm,” Advanced Solid-State Photonics 2007, paper WB17, Vancouver, Jan. 31, 2007.
50. Akira Shirakawa, Jun Ota, Hiroki Maruyama, and Ken-ichi Ueda, “Linearly-polarized Yb-doped fiber laser directly operating at 1178 nm for 589-nm generation,” Advanced Solid-State Photonics 2007, paper MD1, Vancouver, Jan. 29, 2007.
51. Akira Shirakawa, Motoyuki Tanisho, and Ken-ichi Ueda, “Polarization-maintaining fiber pulse compressor by birefringent hollow-core photonic bandgap fiber,” Advanced Solid-State Photonics 2007, paper MB23, Vancouver, Jan. 29, 2007.
52. A. Shirakawa, M. Tokurakawa, K. Takaichi, K. Ueda, H. Yagi, S. Hosokawa, T. Yanagitani, and A. A. Kaminskii, “Mode-locking performance of Yb-doped sesquioxide nanocrystalline ceramic lasers,” 2nd Laser Ceramic Symposium, 11aAS6, Tokyo-Chofu, Nov. 11, 2006.
53. M. Tokurakawa, A. Shirakawa, K. Ueda, H. Yagi, S. Hosokawa, T. Yanagitani, and A. A. Kaminskii, “Diode-pumped mode-locked Yb-doped sesquioxide nanocrystalline ceramic lasers,” Frontier in Optics 2006, 90th OSA Annual Meeting, paper FMK3, Rochester, NY, USA, Oct. 9, 2006.
54. J. Li, J. Dong, K. Ueda, M. Musha, A. Shirakawa, “Temperature variation in passively-Q-switched microchip laser based on repetitively thermal loading, Laser Optics 2006,” paper ThR1-32, St. Petersburg, Russia, June 29, 2006.
55. A. Shirakawa, M. Tokurakawa, K. Takaichi, K. Ueda, H. Yagi, S. Hosokawa, and T. Yanagitani, “Diode-pumped mode-locked ytterbium-doped sesquioxide ceramic lasers,” Laser Optics 2006, paper WeR1-42, St. Petersburg, Russia, June 28, 2006.
56. J. Dong, A. Shirakawa, K. Ueda, “Efficient sub-nanosecond Cr4+:YAG passively Q-switched Yb:YAG microchip lasers and second-harmonic generation, Laser Optics 2006,” paper WeR1-25, St. Petersburg, Russia, June 28, 2006.
57. Akira Shirakawa, Motoyuki Tanisho, and Ken-ichi Ueda, “Dispersion-managed All-fiber Chirped-pulse Amplifier yielding High-power Clean Sub-500-fs Pulses at 1.5 mm,” CLEO/QELS 2006, JWB71, Long Beach, May 2006.
58. Shenghong Huang, Guanshi Qin, Akira Shirakawa, Mitsuru Musha and Ken-ichi Ueda “2KHz Single Frequency 1083nm Ytterbium Doped MOPA Fiber Laser System”, Advanced Solid-State Photonics 2006, paper WD6, Hyatt Regency Lake Tahoe, Feb.1, 2006.
59. Jun Dong, Akira Shirakawa, Ken-ichi Ueda, Jun Xu, and Peizhen Deng, “Efficient Dual-wavelength Laser Performance of Yb:YAG Crystal Grown by Temperature Gradient Technique”, Advanced Solid-State Photonics 2006, paper WB10, Hyatt Regency Lake Tahoe, Feb.1, 2006.
60. Guanshi Qin, Shenghong Huang, Yan Feng, Akira Shirakawa, Mitsuru Musha, and Ken-ichi Ueda, ”Blue Up-conversion Fiber Laser Pumped by a 1120nm Raman Fiber Laser,” COE International Symposium, Chofu, July 2005.
61. Shenghong Huang, Guanshi Qin, Yan Feng, Akira Shirakawa, Mitsuru Musha, and Ken-ichi Ueda, ”Single frequency fiber laser MOPA system with <2kHz linewidth,” COE International Symposium, Chofu, July 2005.
62. Akira Shirakawa, Jun Ota, Kenji Hiwada, Motoyuki Tanisho, Shinya Katsumata, and Ken-ichi Ueda, “High-power fiber laser development in ILS/UEC,” COE International Symposium, Chofu, July 2005.
63. D. Kouznetsov, J-F Bisson, A. Shirakawa, and K. Ueda, “Limits of coherent addition of lasers: simple estimates,” CLEO-PR/IQEC 2005, paper CTuI4-3, Tokyo, July 12, 2005.
64. J. Dong, J. Li, S Huang, Y. Feng, A. Shirakawa, and K. Ueda, “Stable longitudinal multi-mode oscillation in a laser-diode pumped Cr, Yb:YAG self-Q-switched laser,” CLEO-PR/IQEC 2005, paper CThI2-1,Tokyo, July 14, 2005.
65. K. Takaichi, H. Tagi, A. Shirakawa, K. Ueda, T. Yanagitani, A. A. Kaminskii, and S. Hosokawa, “Highly transparent Yb-doped ceramics and the laser-diode-pumped ceramic lasers,” CLEO-PR/IQEC 2005, paper CTuI3-3, Tokyo, July 12, 2005.
66. Guanshi Qin, Shenghong Huang, Yan Feng, Akira Shirakawa, Mitsuru Musha, and Ken-ichi Ueda, “Blue up-conversion laser in Tm3+ doped ZBLAN glass fiber,” CLEO-PR/IQEC 2005, paper CWAB3-P15, Tokyo, July 13, 2005.
67. Shenghong Huang, Yan Feng, Guanshi Qin, Akira Shirakawa, Mitsuru Musha, and Ken-ichi Ueda, “1083nm single frequency ytterbium fiber laser,” CLEO-PR/IQEC 2005, paper CWI4-7, Tokyo, July13, 2005.
68. Jun Ota, Akira Shirakawa and Ken-ichi Ueda, “High-power Yb-doped fiber laser directly operating at 1178 nm,” CLEO-PR/IQEC 2005, paper CTuI4-6, Tokyo, July 12, 2005.
69. Akira Shirakawa and Ken-ichi Ueda, “High-power CW supercontinuum generation by phosphosilicate fiber Raman laser and high-nonlinear fiber,” CLEO-PR/IQEC 2005, paper CWI4-5, Tokyo, July 13, 2005.
70. Akira Shirakawa and Ken-ichi Ueda, “Fiber laser coherent array for power scaling, bandwidth narrowing, and coherent beam direction control,” CLEO-PR/IQEC 2005, paper CWI4-2, Tokyo, July 13, 2005.
71. A. Shirakawa, K. Hiwada, S. Hasegawa, K. Ueda, H. Takuma, K. Mizuuchi, K. Yamamoto, and Y. Ochi, “All-fiber linearly-polarized Yb-doped fiber laser yielding 2.2-W green second harmonics,” CLEO-PR/IQEC 2005, paper CTuI4-4, Tokyo, July 12, 2005.
72. Akira Shirakawa, Mitsuru Musha, Ken-ichi Ueda, Jacob Riis Folkenberg, and Jes Broeng, “Large-mode-area erbium-ytterbium-doped photonic-crystal fiber amplifier yielding 54-kW femtosecond pulses without chirped-pulse amplification,” CLEO-PR/IQEC 2005, paper CTuI4-3, Tokyo, July 12, 2005.
73. Jun Dong, Jianliang Li, Shenghong Huang, Yan Feng, Akira Shirakawa, and Ken-ichi Ueda, “Laser-diode pumped microchip Cr,Yb:YAG self-Q-switched laser,” European Conference on Lasers and Electro-Optics (CLEO/Europe-EQEC 2005), CA-1-5-MON, Munich, June 13, 2005.
74. K. Takaichi, M. Tokurakawa, A. Shirakawa, K. Ueda, H. Yagi, S. Hosokawa, T. Yanagitani, and A. A. Kaminskii, “Ytterbium-doped tunable ceramic laser,” European Conference on Lasers and Electro-Optics (CLEO/Europe-EQEC 2005), CA-1-2-MON, Munich, June 13, 2005.
75. Akira Shirakawa, Jun Ota, Mitsuru Musha, Ken-ichi Ueda, Jacob Riis Folkenberg, and Jes Broeng, “50-kW, 100-fs pulse generation by large-mode-area erbium-ytterbium-doped photonic-crystal fiber amplifier,” CLEO/QELS 2005, Baltimore, May 2005.
76. K. Takaichi, H. Yagi, T. S. Petrov, M. Tokurakawa, A. Shirakawa, K. Ueda, S. Hosokawa, T. Yanagitani, J. Kawanaka, and A. A. Kaminskii, “Laser and Spectroscopic Properties of Yb3+-doped Rare-earth Sesquioxide Ceramics,” Advanced Solid-State Photonics 2005, Vienna, February 6-9, 2005.
77. Shenghong Huang, Yan Feng, Guanshi Qin, Akira Shirakawa, Ken-ichi Ueda, “Single Frequency Fiber Laser Generated in Linear Cavity with Loop Mirror Filter,” Advanced Solid-State Photonics 2005, Vienna, February 6-9, 2005.
78. Yan Feng, Shenghong Huang, Akira Shirakawa, Ken-ichi Ueda, “CW Yellow-Orange Lasers by Frequency Sum-Mixing of a Cascading Raman Fiber Lasers,” Advanced Solid-State Photonics 2005, Vienna, February 6-9, 2005.
79. Akira Shirakawa, Jun Ota, Mitsuru Musha, Ken-ichi Ueda, Jacob Riis Folkenberg, and Jes Broeng, “Large-mode-area Er/Yb-doped photonic-crystal fiber amplifier yielding a 40-kW peak power at 1.5 mm,” Advanced Solid-State Photonics 2005, Vienna, February 2005.
80. Akira Shirakawa, Keigo Matsuo, and Ken-ichi Ueda, “Fiber laser coherent array for power scaling, bandwidth narrowing, and beam direction control,” Advanced Solid-State Photonics 2005, Wien, February 2005.
81. Akira Shirakawa and Ken-ichi Ueda, “CW 7-W, 900-nm-wide supercontinuum source by phosphosilicate fiber Raman laser and high-nonlinear fiber,” Photonics West 2005, San Jose, January 2005.
82. Akira Shirakawa, Mitsuru Musha, Ken-ichi Ueda, Jacob Riis Folkenberg, and Jes Broeng, “Large-mode-area erbium-ytterbium-doped photonic-crystal fiber amplifier yielding 54-kW femtosecond pulses without chirped-pulse amplification,” Photonics West 2005, San Jose, January 2005 (postdeadline paper).
83. Dmitrii Kouznetsov, Jean-Francois Bisson, Kazunori Takaichi, Akira Shirakawa, Mitsuru Musha, Hitoki Yoneda, and Ken-ichi Ueda, “Single-mode, scalable, solid-state laser with short wide unstable cavity,” Frontiers in Optics 2004, The 88th OSA Annual Meeting, paper FWH50, Rochester, October 10-14, 2004.
84. K. Takaichi, J. Lu, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. A. Kaminskii, EPS-QEOD EUROPHOTON CONFERENCE on Solid-State and Fiber Coherent Light Sources, Lausanne, Switzerland, August 29 – September 3, 2004.
85. Jianren Lu, Hideki Yagi, Kazunori Takaichi, Jean-Francois Bisson, Y. Feng, Akira Shiragawa, Ken-ichi Ueda, Takagimi Yanagitani, Alexander A. Kaminskii, “High power ceramic Nd3+:Y3Al5O12 laser,” CLEO/IQEC 2004, San Francisco, May 16-21, 2004.
86. K. Takaichi, J. Lu, T. Uematsu, J.F. Bisson, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. A. Kaminskii, “Highly efficient cw Yb-doped ceramic Lasers,” CLEO/IQEC 2004, paper CTuT5, San Francisco, May 16-21, 2004.
87. Akira Shirakawa, Keigo Matsuo, and Ken-ichi Ueda, “Power summation and bandwidth narrowing in coherently-coupled fiber laser array,” CLEO/IQEC 2004, paper CThGG2, San Francisco, May 16-21, 2004.
88. A. Shirakawa, K. Takaichi, H. Yagi, J-F. Bisson, J. Lu, K. Ueda, T. Yanagitani, and A. A. Kaminskii, “Diode-pumped mode-locked Yb3+:Y2O3 ceramic laser,” CLEO/IQEC 2004, paper CThFF3, San Francisco, May 16-21, 2004.
89. Yan Feng, Huang, Shenhong, Akira Shirakawa, Ken-ichi Ueda, “High efficiency Raman fiber lasers and frequency doubling,” 5th International Symposium on Laser Precision Microfabrication, Nara, May 2004.
90. Akira Shirakawa, Keigo Matsuo, and Ken-ichi Ueda, “Fiber laser coherent array for power scaling of single-mode fiber laser,” 5th International Symposium on Laser Precision Microfabrication, Nara, May 2004.
91. Jianren Lu J. F. Bisson, Y. Feng, A. Shirakawa, Ken-ichi Ueda, H. Yagi and T. Yanagitani, and A. A. Kaminskii, “High Power ceramic Nd3+:Y3Al5O12 laser,” Asia Pacific Laser Symposium 2004, Yongpyong, March 2004.
92. Shenghong Huang, Yan Feng, Akira Shirakawa, Mitsuru Musha, and Ken-ichi Ueda, “Generation and application of 1178-nm laser based on phosphosilicate Raman fiber laser,” Asia Pacific Laser Symposium 2004, Yongpyong, March 2004.
93. A. Shirakawa, K. Takaichi, H. Yagi, J-F. Bisson, J. Lu, K. Ueda, T. Yanagitani A. A. Kaminskii “Diode-pumped mode-locked Yb3+:Y2O3 ceramic laser,” Asia Pacific Laser Symposium 2004, Yongpyong, March 2004.
94. Akira Shirakawa, Keigo Matsuo, and Ken-ichi Ueda, “Fiber laser coherent array for power scaling and bandwidth narrowing,” Asia Pacific Laser Symposium 2004, Yongpyong, March 2004.
95. K. Takaichi, H. Yagi, J. Lu, J. -F. Bisson, T. S. Petrov, A. Shirakawa, K. Ueda,T. Yanagitani, and A. A. Kaminskii, “Yb3+-doped ceramic lasers,” Advanced Solid State Photonics 2004, paper WA3, Santa Fe, New Mexico, February 1 – 4, 2004.
96. T. Kuwayama, A. Taniguchi, A. Hoel, J-F. Bisson, A. Shirakawa, and K. Ueda, “High-efficiency 2-mm Tm-Ho codoped silica fiber laser pumped at 1212 nm,” CLEO/Pacific Rim 2003, Taipei, December 2003.
97. Akira Shirakawa, Keigo Matsuo, and Ken-ichi Ueda, “Scalable coherent beam coupling of fiber lasers,” CLEO/Pacific Rim 2003, Taipei, December 2003.
98. K. Takaichi, J. Lu, T. Uematsu, J.F. Bisson, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. A. Kaminskii, “Yb3+-doped ceramic lasers,” Conference on Lasers and Electro Optics (CLEO 2003), paper CFG2, Baltimore, Maryland, June 1 – 6, 2003.
99. Akira Shirakawa, Tomoki Sekiguchi, and Ken-ichi Ueda, “Scalable coherent beam combining of fiber lasers,” CLEO/QELS 2003, paper CWO1, Baltimore, June 2003.
100. Akira Shirakawa, Tomoki Sekiguchi, and Ken-ichi Ueda, “Scalable coherent beam combining of fiber lasers,” 2003 Advanced Solid-State Photonics, San Antonio, February 2003.
101. Akira Shirakawa, Tomoharu Saitou, Tomoki Sekiguchi, and Ken-ichi Ueda, “Coherent addition of fiber lasers using a fiber coupler,” Frontiers in Optics 2002, The 86th OSA Annual Meeting, Orland, October 2002.
102. A. Taniguchi, T. Kuwayama, A. Shirakawa, M. Musha, M. Prabhu, and K. Ueda, “Raman Fiber-pumped 2μm Fiber Laser,” IQEC/LAT 2002, Moscow, June 2002.
103. Akira Shirakawa, Tomoharu Saitou, and Ken-ichi Ueda, “Output-Port Selectable Coherent Addition of Fiber Lasers,” International Quantum Electronics Conference 2002, Moscow, June 2002.
104. A. Taniguchi, T. Kuwayama, M. Prabhu, A. Shirakawa, M. Musha, and K. Ueda, “Raman Fiber Laser-pumped Infrared Fiber Laser,” CRL International Symposium on Light Propagation and Sensing Technologies for Future Applications, Tokyo, March 2002.
105. K. Takaichi, J. Lu, T. Murai, T. Uematsu, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. A. Kaminskii, “All Ceramic Q-switched laser,” CRL International Symposium on Light Propagation and Sensing Technologies for Future Applications, P-2, Tokyo, March 2002.
106. Tomoharu Saitou, Akira Shirakawa, and Ken-ichi Ueda, “Characteristics of a fiber arrayed laser by using a directional fiber coupler,” CRL International Symposium, Tokyo, March 2002.
107. M. Prabhu, T. Saitou, A. Taniguchi, J. Lu, J. Xu, N. S. Kim, M. Musha, A. Shirakawa and K. Ueda, “Supercontinuum generation centered at 1484.4nm and 1239nm using Raman fiber laser,” CLEO/Pacific Rim 2001, Chiba, Japan.
108. A. Shirakawa, “Sub-5-fs pulse generation using noncollinear optical parametric amplifier,” The memorial symposium of the 25th anniversary of NICTL RAN, Shatura, Russia, June 22, 1999.
109. T. Kobayashi, A. Shirakawa, H. Matsuzawa, and H. Nakanishi, “Sub-5-fs Real-time Spectroscopy of Coherent Geometrical Relaxation Processes in Polydiacetylenes”, CLEO/QELS 1999, Baltimore, May 1999.
110. A. Shirakawa, I. Sakane, and T. Kobayashi, “Sub-5-fs Pulse Generation by Pulse-front-matched Optical Parametric Amplification”, XIth International Conference on Ultrafast Phenomena, Postdeadline Paper, Garmisch-Partenkirchen, July 1998.
111. A. Shirakawa, I. Sakane, and T. Kobayashi, “Pulse-front-matched Optical Parametric Amplification for Pulse Generation Tunable in the Visible and Near-infrared Reaching to 6.5fs”, CLEO/IQEC 1998, Postdeadline Paper, San Francisco, May 1998.
112. Akira Shirakawa and Takayoshi Kobayashi, “Sub-10-fs Pulse Generation from a Noncollinear Optical Parametric Amplifier,” Fifth International Workshop on Femtosecond Technology, Tsukuba, February 1998.
113. Akira Shirakawa and Takayoshi Kobayashi, “Broadband 18-fs Optical Parametric Amplifier by Noncollinear Phase-matching”, Ultrafast Optics 1997, Monterey, August 1997.
114. Akira Shirakawa, Shigeki Morita, Kazuhiko Misawa, and Takayoshi Kobayashi, “100-nm Bandwidth Noncollinearly Phase-matched Femtosecond Optical Parametric Amplifier”, CLEO/Pacific Rim ’97, Chiba, July 1997.
115. A. Shirakawa, S. Morita, K. Misawa, and T. Kobayashi, “Broadband Femtosecond Optical Parametric Amplification in a Non-collinear Phase-Matching Geometry”, Fourth International Workshop on Femtosecond Technology, Tsukuba, February 1997.
116. A. Shirakawa, H. W. Mao, and T. Kobayashi, “High-power Green femtosecond pulses”, CLEO/Pacific Rim ’95, Chiba, July 1995.
117. A. Shirakawa, H. W. Mao, and T. Kobayashi, “High-power, high-repetition-rate femtosecond light source tunable in a green-orange region”, International Workshop on Femtosecond Technology, Tsukuba, February 1995.

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