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. H. Nakao, A. Shirakawa, K. Ueda, H. Yagi, and T. Yanagitani, “CW and mode-locked operation of Yb3+-doped Lu3Al5O12 ceramic laser,” Opt. Express vol.20, no.14, 15385-15391 (2012).
2. H. Nakao, A. Shirakawa, K. Ueda, A. A. Kaminskii, S. Kuretake, N. Tanaka, Y. Kintaka, K. Kageyama, H. Yagi, and T. Yanagitani, “Investigation of the laser and optical properties of new laser materials,” Opt. Materials, accepted for publication (2012).
3. X. Fan, M. Chen, A. Shirakawa, K. Ueda, C. B. Olausson, J. K. Lyngsø, and J. Broeng, “High power Yb-doped photonic bandgap fiber oscillator at 1178 nm,” Opt. Express vol.20, no.13, 14471-14476 (2012).
4. A. A. Kaminskii, X. Xu, O. Lux, H. Rhee, H. J. Eichler, J. Zhang, D. Zhou, A. Shirakawa, K. Ueda, and J. Xu, “High-order stimulated Raman scattering in tetragonal CaYAlO4 crystal-host for Ln3+-lasant ions,” Laser Phys. Lett. vol.9, no.4, 306–311 (2012).
5. M. Tokurakawa, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, A. A. Kaminskii, K. Beil, C. Kränkel, and G. Huber, “Continuous wave and mode-locked Yb3+:Y2O3 ceramic thin disk laser,” Opt. Express vol.20, no.10, 10847-10852 (2012).
6. 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,” Proc. SPIE vol.8237, 82371H1-9 (2012).
7. M. Sh. Akchurin, R. V. Gainutdinov, I. I. Kupenko, H. Yagi, K. Ueda, A. Shirakawa, and A. A. Kaminskii, “Lutetium–aluminum garnet laser ceramics,” Doklady Physics vol.56, no.12, 589–592 (2011).
8. A. A. Kaminskii, H. Rhee, O. Lux, H. J. Eichler, L. Bohatý, P. Becker, J. Liebertz, K. Ueda, A. Shirakawa, V. V. Koltashev, J. Hanuza, J. Dong, and D. B. Stavrovskii, “Many-phonon stimulated Raman scattering and related cascaded and cross-cascaded χ(3)-nonlinear optical effects in melilite-type crystal Ca2ZnSi2O7,” Laser Phys. Lett. vol.8, no.12, 859–874 (2011).
9. A. A. Kaminskii, H. Rhee, O. Lux, H. J. Eichler, S. N. Bagayev, H. Yagi, K. Ueda, A. Shirakawa, and J. Dong, “Stimulated Raman scattering in "garnet" Lu3Al5O12 ceramics - a novel host-materiel for Ln- and TM-lasant ions,” Laser Phys. Lett. vol.8, no.6, 458–464 (2011).
10. A. A. Kaminskii, H. Nakao, A. Shirakawa, K. Ueda, J. Liebertz, P. Becker, and L. Bohatý, “CW one-micron (4F3/2-4I11/2) laser oscillation of Nd3+ ions in the melilite-type crystal Ca2MgSi2O7:Nd3+(Na+) at its incommensurate–commensurate phase transition,” Appl Phys. B vol. 103, no. 3, 629–635 (2011).
11. M. Tokurakawa, A. Shirakawa, K. Ueda, R. Peters, S. T. Fredrich-Thornton, K. Petermann and G. Huber, “Ultrashort pulse generation from diode pumped mode-locked Yb3+:sesquioxide single crystal lasers,” Opt. Express vol.19, no.4, 2904-2909 (2011).
12. M. P. Thirugnanasambandam, Y. Senatsky, A. Shirakawa, and K. Ueda, “Multi-ring modes generation in Yb:YAG ceramic laser,” Opt. Mat. vol.33, no.5, 675-678 (2011) (published online Nov. 2010).
13. H. Kurokawa, A. Shirakawa, M. Tokurakawa, K. Ueda, N. Tanaka, Y. Kintaka, S. Kuretake, K. Kageyama, H. Takagi, and A. A. Kaminskii, “Broadband-gain Nd3+-doped Ba(Zr,Mg,Ta)O3 ceramic lasers for ultrashort pulse generation,” Opt. Mat. vol.33, no.5, 667-669 (2011) (published online Nov. 2010).
14. A. A. Kaminskii, H. Nakao, L. Bohatý, P. Becker, J. Liebertz, R. Kleinschrodt, K. Ueda, and A. Shirakawa, “Stimulated emission (4F3/2→4I11/2 channel) with LD and Xe-flashlamp pumping of tetragonal, incommensurately modulated Ca2MgSi2O7:Nd3+(Na+) – a new disordered laser crystal,” Laser Physics Letters vol. 7, no.12. 876-883 (2010) (published online Oct. 2010).
15. A. Shirakawa, C. B. Olausson, H. Maruyama, K. Ueda, J. K. Lyngsø, and J. Broeng, “High power ytterbium fiber lasers at extremely long wavelengths by photonic bandgap fiber technology,” Opt. Fiber. Tech., vol.16, 449-457 (2010) (invited paper).
16. A. A. Kaminskii, L. Bohatý, P. Becker, R. Kleinschrodt, H. J. Eichler, H. Rhee, K. Ueda, A. Shirakawa, and V. V. Koltashev, “More than two-octaves span of the Stokes and anti-Stokes picosecond lasing comb in orthorhombic natural single crystals of celestine, SrSO4,” Laser Physics Letters, vol.7, no.10, pp.743-751 (2010).
17. C. B. Olausson, A. Shirakawa, M. Chen, J. K. Lyngsø, J. Broeng, K. P. Hansen, A. Bjarklev, and K. Ueda, “167 W, power scalable ytterbium-doped photonic bandgap fiber amplifier at 1178nm,” Opt. Express, vol.18, no.16, pp.16345-16352 (2010).
18. M. Tokurakawa, H. Kurokawa, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. A. Kaminskii, “Continuous-wave and mode-locked lasers on the base of partially disordered crystalline Yb3+:{YGd2}[Sc2](Al2Ga)O12 ceramics,” Opt. Express, vol.18, no.2, pp.4390-4395 (2010).
19. C. B. Olausson, A. Shirakawa, H. Maruyama, K. Ueda, J. K. Lyngsø, and J. Broeng, “Power-scalable long-wavelength Yb-doped photonic bandgap fiber sources,” Proc. SPIE vol. 7580, 758013 (2010).
20. 小林哲也，白川晃，植田憲一：「Talbot共振器によるマルチコアファイバーレーザーのin-phaseモード選択励振」, レーザー研究, vol.38, no.2, pp.136-140 (2010).
21. J. Li, A. Shirakawa, K. Ueda, D. Lin, and L. Zhong, “Generation of cylindrical vector lights from passively Q-switched Nd:YAG laser by using photonic crystal gratings,” Rev. Laser Engineering, vol.37, no.11, pp.806-810 (2009). (invited paper)
22. J.-L. Li, D. Lin, and L.-X. Zhong, K. Ueda, A. Shirakawa, M. Musha, W.-B. Chen, “Passively Q-switched Nd:YAG ceramic microchip laser with azimuthally polarized output,” Laser Physics Letters, vol.6, no.10, pp.711-714 (2009).
23. A. A. Kaminskii, S. N. Bagaev, K. Ueda, A. Shirakawa, M. Tokurakawa, H. Yagi, T. Yanagitani, and J. Dong, “Stimulated-emission spectroscopy of fine-grained "garnet" ceramics Nd3+:Y3Al5O12 in a wide temperature range between 77 and 650 K,” Laser Phys. Lett., vol.6, no.9, pp.682-687 (2009).
24. A. A. Kaminskii, S. N. Bagaev, K. Ueda, H. Yagi, H. J. Eichler, A. Shirakawa, M. Tokurakawa, H. Rhee, K. Takaichi, and T. Yanagitani, “Nonlinear-laser c(3)-effects in novel garnet-type fine-grained ceramic-host {YGd2}[Sc2](Al2Ga)O12 for Ln3+ lasants,” Laser Phys. Lett., vol.6, no.9, pp.671-677 (2009).
25. Yu. Senatsky, J.-F. Bisson, A. Shelobolin, A. Shirakawa, and K. Ueda, “Circular modes selection in Yb:YAG laser using an intracavity lens with spherical aberration,” Laser Physics, vol.19, no.5, pp.911-918 (2009).
26. C. B. Olausson, J. K. Lyngsø, J. Broeng, H. Maruyama, and A. Shirakawa, “FIBER AMPLIFIERS: Photonic-bandgap fiber amplifier reaches for the stars,” Laser Focus World, April 2009.
27. M. Tokurakawa, A. Shirakawa, K. Ueda, H. Yagi, M. Noriyuki, T. Yanagitani, and A. A. Kaminskii, “Diode-pumped ultrashort-pulse generation based on Yb3+:Sc2O3 and Yb3+:Y2O3 ceramic multi-gain-media oscillator,” Opt. Express, vol.17, pp.3353-3361 (2009).
28. 白川晃，植田憲一：「高出力Yb添加ファイバーレーザー研究の最前線と展望」，光学，vol. 38, no.1, p.25-32 (2009). (invited paper)
29. A. A. Kaminskii. H. Kurokawa, A. Shirakawa, K. Ueda, N. Tanaka, P. Becker, L. Bohatý, M. Akchurin, M. Tokurakawa, S. Kuretake, Y. Kintaka, K. Kageyama, and H. Takagi, “Ba(Mg,Zr,Ta)O3:Nd3+ fine-grained ceramics: a novel laser-gain material with disordered structure for high-power laser systems,” Laser Phys. Lett., vol.6, pp.304-310 (2009).
30. A. Shirakawa, H. Maruyama, K. Ueda, C. B. Olausson, J. K. Lyngsø, and J. Broeng, “High-power Yb-doped photonic bandgap fiber amplifier at 1150-1200 nm,” Opt. Express, vol. 17, no.2, pp.447-454 (2009).
31. J. Li, K. Ueda, M. Musha, L.Zhong, and A. Shirakawa, “Radially polarized and pulsed output from passively Q-switched Nd:YAG ceramic microchip laser,” Opt. Lett., vol.33, pp.2686-2688 (2008).
32. J. Dong, A. Shirakawa, and K. Ueda, “A crystalline-orientation self-selected linearly polarized Yb:Y3Al5O12 microchip laser,” Appl. Phys. Lett., vol.93, pp.101105 (2008).
33. A. Shirakawa, H. Maruyama, and K. Ueda, “High-power scaling of Yb fiber laser in the long wavelength range,” IEEJ Technical Digest, OQD－08－40 (2008).
34. J. Li, K. Ueda, L. Zhong, M. Musha, A. Shirakawa, and T. Sato, “Efficient excitations of radially and azimuthally polarized Nd3+:YAG ceramic microchip laser by use of subwavelength multilayer concentric gratings composed of Nb2O3/SiO2,” Opt. Express, vol.16, pp.10841-10848 (2008).
35. A. A. Kaminskii, M. Sh. Akchurin, P. Becker, K. Ueda, L. Bohatý, A. Shirakawa, M. Tokurakawa, K. Takaichi, H. Yagi, J. Dong, and Y. Yanagitani, “Mechanical and optical properties of Lu2O3 host-ceramics for Ln3+ lasants,” Laser Phys. Lett., vol.5, pp.300-303 (2008).
36. A. A. Kaminskii, M. Sh. Akchurin, N. Tanaka, H. J. Eichler, H. Rhee, K. Ueda, K. Takaichi, A. Shirakawa, M. Tokurakawa, J. Dong, Y. Kintaka, S. Kuretake, and Y. Sakabe, ”Nonlinear-laser c(3)- and c(2)-effects in fine-grained highly transparent optical Ba(Mg,Zr,Ta)O3 ceramic and their microhardness,” Phys. Stat. Sol. (a), vol.205, pp.1666-1671 (2008).
37. 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,” Proc. SPIE vol.7099, 70990V (2008).
38. M. Tokurakawa, A. Shirakawa, K. Ueda, H. Yagi, S. Hosokawa, T. Yanagitani, and A. A. Kaminskii, “Diode-pumped 65 fs Kerr-lens mode-locked Yb3+:Lu2O3 and nondoped Y2O3 combined ceramic laser,” Opt. Lett., vol.33, no.12, pp.1380-1382 (2008).
39. A. A. Kaminskii, V. V. Dolbinina, H. Rhee, H. J. Eichler, K. Ueda, K. Takaichi, A. Shirakawa, M. Tokurakawa, J. Dong, and D. Jaque, “Nonlinear-laser effects in NH4H2PO4 (ADP) and ND4D2PO4 (DADP) single crystals: almost two-octave multi-wavelength Stokes and anti-Stokes combs, cascaded lasing in UV and visible ranges with the involving of the second and third harmonic generation,” Laser Phys. Lett., vol.5, no.7, pp.532-542 (2008).
40. A. A. Kaminskii, H. Rhee, H. J. Eichler, K. Ueda, T. Takaichi, A. Shirakawa, M. Tokurakawa, J. Dong, H. Yagi, and T. Yanagitani, “New nonlinear-laser effects in crystalline fine-grained ceramics based on cubic Sc2O3 and Lu2O3 oxides: second and third harmonic generation, and cascaded self-sum-frequency mixing in UV spectral region,” Laser Phys. Lett., vol.5, pp.109-113 (2008).
41. M. Tokurakawa, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. A. Kaminskii, “Diode-pumped sub-100 fs Kerr-lens mode-locked Yb3+:Sc2O3 ceramic laser,” Opt. Lett., vol.32, no.23, pp.3382-3384 (2007).
42. J. Dong, A. Shirakawa, K. Ueda, and A. A. Kaminskii, “Effect of ytterbium concentration on cw Yb:YAG microchip laser performance at ambient temperature - Part II: Theoretical modeling,” Appl. Phys. B, vol.89, pp.367-376 (2007).
43. J. Dong, A. Shirakawa, K. Ueda, and A. A. Kaminskii, “Effect of ytterbium concentration on cw Yb:YAG microchip laser performance at ambient temperature - Part I: Experiments,” Appl. Phys. B, vol.89, pp.359-365 (2007).
44. J. Dong, K. Ueda, A. Shirakawa, H. Yagi, T. Yanagitani, A. A. Kaminskii, “Composite Yb:YAG/Cr4+:YAG ceramics picosecond microchip lasers,” Opt. Exp., vol.15, no.22, pp.14516-14523 (2007).
45. J. Dong, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. A. Kaminskii, “Laser-diode pumped heavy-doped Yb:YAG ceramic lasers,” Opt. Lett., vol.32, pp.1890-1892 (2007).
46. A. Shirakawa, M. Kamijo, J. Ota, K. Ueda, K. Mizuuchi, H. Furuya, and K. Yamamoto, “Characteristics of Linearly-Polarized Yb-Doped Fiber Laser in an All-Fiber Configuration,” IEEE Photon. Tech. Lett., vol.19, no.20, pp.1664-1666 (2007).
47. A. A. Kaminskii, N. Tanaka, H. J. Eichler, H. Rhee, K. Ueda, K. Takaichi, A. Shirakawa, M. Tokurakawa, Y. Kintaka, S. Kuretake, and Y. Sakabe, “Picosecond Raman induced Stokes and anti-Stokes lasing in fine-grained Ba(Sn,Zr,Mg,Ta)O3 crystalline ceramics with the cubic perovskite structure,” Laser Phys. Lett., vol.4, pp.819-823 (2007).
48. K. Takaichi, H. Yagi, P. Becker, A. Shirakawa, K. Ueda, L. Bohatý, T. Yanagitani, and A. A. Kaminskii, “New data on investigation of novel laser ceramic on the base of cubic scandium sesquioxide: two-band tunable CW generation of Yb3+:Sc2O3 with laser-diode pumping and the dispersion of refractive index in the visible and near-IR of undoped Sc2O3,” Laser Phys. Lett., vol.4, pp.507-510 (2007).
49. 白川晃，植田憲一：「ファイバーレーザー」，最新レーザーとプラズマ研究，プラズマ・核融合学会誌，vol.83, no.8, p.702-704 (2007). (invited paper)
50. Jun Dong, Akira Shirakawa, Ken-ichi Ueda, Hideki Yagi, Takagimi Yanagitani, and Alexander A. Kaminskii, “Ytterbium and chromium doped composite Y3Al5O12 ceramics self-Q-switched laser,” Appl. Phys. Lett., vol.90, no.19, pp.191106 (2007).
51. Jun Dong, Akira Shirakawa, Ken-ichi Ueda, Hideki Yagi, Takagimi Yanagitani, and Alexander A. Kaminskii, “Near-diffraction-limited passively Q-switched Yb:Y3Al5O12 ceramic lasers with peak power >150 kW,” Appl. Phys. Lett., vol.90, no.13, pp.131105 (2007).
52. J. Li, K. Ueda, M. Musha, A. Shirakawa, and L. Zhong, “Converging-axicon-based radially polarized ytterbium fiber laser and evidence on the mode profile inside the gain fiber,” Opt. Lett., vol.32, no.11, pp.1360-1362 (2007).
53. 白川晃，植田憲一：「フォトニック結晶ファイバーを用いた高出力超短パルス増幅(High-power ultrashort pulse amplification by use of photonic-crystal fibers)」，光技術コンタクト (Optical and Electro-Optical Engineering Contact), vol.45, no.4, pp.195-201 (2007). (invited paper)
54. Jun Dong, Akira Shirakawa, and Ken-ichi Ueda, “Switchable pulses generation in passively Q-switched multilongitudinal-mode microchip laser,” Laser Phys. Lett., vol.4, no.2, pp.109-116 (2007).
55. Jianlang Li, Jun Dong, Musha Mitsurua, Akira Shirakawa, and Ken-ichi Ueda, “Transient temperature profile in the gain medium of CW- and end-pumped passively Q-switched microchip laser,” Opt. Commun., vol.270, no.1, pp.63-67 (2007).
56. M. Tokurakawa, K. Takaichi, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. A. Kaminskii, “Diode-pumped 188 fs mode-locked Yb3+:Y2O3 ceramic laser,” Appl. Phys. Lett., vol.90, pp.071101 (2007).
57. J. Li, M. Musha, A. Shirakawa, K Ueda, and L. X. Zhong, " Dual-wavelength-switching operation based on optical bistability in pump-bypassed ytterbium-doped fiber laser," Appl. Phys. B, vol.85, pp.545-548 (2006).
58. Jianlang Li, Ken-ichi Ueda, Jun Dong, Mitsuru Musha, and Akira Shirakawa, "Maximum value of the pulse energy of a passively Q-switched laser as a function of the pump power," Appl. Opt., vol.45, pp.5377-5384 (2006).
59. Jun Dong, Akira Shirakawa, and Ken-ichi Ueda, “Antiphase dynamics of sub-nanosecond microchip Cr,Yb:YAG self-Q-switched multimode laser,” Euro. Phys. J. D, vol.39, no.1, pp.101-106 (2006).
60. Jun Dong, Akira Shirakawa, Ken-ichi Ueda, Jun Xu, and Peizhen Deng, “Efficient laser oscillation of Yb:Y3Al5O12 single crystal grown by temperature gradient technique,” Appl. Phys. Lett., vol.88, no.16, pp.161115 (2006).
61. Jun Dong, Akira Shirakawa, Ken-ichi Ueda, “Sub-nanosecond passively Q-switched Yb:YAG/Cr4+:YAG sandwiched microchip laser,” Appl. Phys. B: Lasers and Optics, vol.85, no.4, pp.513-518 (2006).
62. Jun Dong, Akira Shirakawa, Ken-ichi Ueda, Hideki Yagi, Takagimi Yanagitani, and Alexander A. Kaminskii, “Efficient Yb3+:Y3Al5O12 ceramic microchip lasers,” Appl. Phys. Lett., vol.89, no.9, pp.091114 (2006).
63. Jun Dong, Akira Shirakawa, Ken-ichi Ueda, Hideki Yagi, Takagimi Yanagitani, and Alexander A. Kaminskii, “All ceramic passively Q-switched Yb:YAG/Cr4+:YAG microchip laser,” Electron. Lett., vol.42, no.20, pp.1154-1156 (2006).
64. M. Tokurakawa, K. Takaichi, A. Shirakawa, K. Ueda, H. Yagi, S. Hosokawa, T. Yanagitani, and A. A. Kaminskii, ”Diode-pumped mode-locked Yb3+:Lu2O3 ceramic laser,” Opt. Express, vol.14, no.26, pp.12832-12838 (2006).
65. J. Li, K. Ueda, M. Musha, A. Shirakawa, and L. Zhong, “Generation of radially polarized mode in Yb fiber laser by using a dual conical prism,” Opt. Lett., vol.31, no.20, pp.2969-2671 (2006).
66. J. Li, K. Ueda, M. Musha, and A. Shirakawa, “Residual pump light as a probe of self-pulsing instability in an ytterbium-doped fiber laser,” Opt. Lett., vol.31, no.10, pp.1450-1452 (2006).
67. Akira Shirakawa, Motoyuki Tanisho, and Ken-ichi Ueda, “Polarization-maintaining fiber pulse compressor by birefringent hollow-core photonic bandgap fiber,” Opt. Express, vol.14, no.25, pp.12039-12048 (2006).
68. A. A. Kaminskii, S. N. Bagayev, K. Ueda, K. Takaichi, A. Shirakawa, S. N. Ivanov, E. N. Khazanov, A. V. Taranov, H. Yagi, and T. Yanagitani, “New results on characterization of highly transparent C-modification Lu2O3 nanocrystalline ceramics: room-temperature tunable CW laser action of Yb3+ ions under LD-pumping and the propagation kinetics of non-equilibrium acoustic phonons,” Laser Phys. Lett., vol.3, pp.375-379 (2006).
69. A. A. Kaminskii, S. N. Bagaev, H. J. Eichler, K. Ueda, K. Takaichi, A. Shirakawa, H. Yagi, T. Yanagitani, and H. Rhee, “Observation of high-order Stokes and anti-Stokes c(3)-generation in highly transparent laser-host Lu2O3 ceramics,” Laser Phys. Lett., vol.3, pp.310-313 (2006).
70. G. Qin, S. Huang, Y. Feng, A. Shirakawa, M. Musha, and K. Ueda, “Power scaling of Tm3+ doped ZBLAN blue upconversion fiber lasers: modeling and experiments,” Appl. Phys. B, vol.82 no.1, pp.65-70 (2006).
71. Jun Ota, Akira Shirakawa, and Ken-ichi Ueda, “High-power Yb-doped double-clad fiber laser directly operating at 1178nm,” Jpn. J. Appl. Phys., vol.45, no.4, pp.L117-L119 (2006).
72. D. Kouznetsov, J-F. Bisson, A. Shirakawa, and K. Ueda, “Limits of Coherent Addition of Lasers: Simple Estimate,” Opt. Rev., vol.12, no. 6, pp.445-447 (2005).
73. J. Dong, J. Li, S. Huang, A. Shirakawa, and K. Ueda, “Multi-longitudinal-mode oscillation of self-Q-switched Cr,Yb:YAG laser with a plano-concave resonator,” Opt. Comm., vol.256, pp.158-165 (2005).
74. J. Dong, A. Shirakawa, and K. Ueda, “Numerical simulation of a diode-laser-pumped self-Q-switched Cr,Yb:YAG microchip laser,” Opt. Rev., vol.12, pp.170-178 (2005).
75. G. Qin, S. Huang, Y. Feng, A. Shirakawa, and K. Ueda, “Multiple-wavelength up-conversion laser in Tm3+-doped ZBLAN glass fiber,” IEEE Photon. Tech. Lett. vol.17, no.9, pp.1818-1820 (2005).
76. S. N. Ivanv, Yu. N. Barabanenkov, A. V. Taranov, E. N. Khazanov, H. Yagi, T. Yanagitani, K. Tkaichi, J. Lu, J. F. Bisson, A. Shirakawa, K. Ueda, S. N. Bagayev, and A. A. Kaminskii, ”Non-equilibrium acoustic phonons in nanocrystalline ceramics based on C-modification of Y2O3 sesquioxide,” Phys. Stat. Sol. (b), vol.242, pp.1983-1989 (2005).
77. A. A. Kaminskii, M. Sh. Akchurin, R. V. Gainutdinov, K. Takaichi, A. Shirakawa, H. Yagi, T. Yanagitani, and K. Ueda, ”Microharness and fracture toughness of Y2O3- and Y3Al5O12-based nanocrystallin laser ceramics,” Crystallography Reports, vol.50, pp.869-873 (2005).
78. K. Ueda, J.-F. Bisson, H. Yagi, K. Takaichi, A. Shirakawa, T. Yanagitani, and A. A. Kaminskii, “Scalable ceramic lasers,” Laser Phys., vol.15, pp.927-938 (2005).
79. S. Huang, G. Qin. A. Shirakawa, M. Musha, and K. Ueda, “Single frequency 1083nm ytterbium doped fiber master oscillator power amplifier laser,” Opt. Exp., vol.13, no.18, pp.7113-7117 (2005).
80. S. Huang, Y. Feng, J. Dong, A. Shirakawa, M. Musha, and K. Ueda, “1083 nm single frequency ytterbium doped fiber laser,” Laser Physics Letters vol.2, no.10, pp.498-501 (2005).
81. A. Shirakawa, J. Ota, M. Musha, K. Nakagawa, K. Ueda, J. R. Folkenberg, and J. Broeng, “Large-mode-area erbium-ytterbium-doped photonic-crystal fiber amplifier yielding 54-kW femtosecond pulses without chirped-pulse amplification,” OSA TOPS, vol.98, pp.547-552 (2005).
82. Akira Shirakawa, Keigo Matsuo, and Ken-ichi Ueda, “Fiber laser coherent array for power scaling, bandwidth narrowing, and beam direction control,” OSA TOPS, vol.98, pp.553-558 (2005).
83. G. Qin, S. Huang, Y. Feng, A. Shirakawa, M. Musha, and K. Ueda, “Photodegradation and photocuring in the operation of a blue upconversion fiber laser,” J. Appl. Phys., vol.97, no.12, pp.126108 (2005).
84. G. Qin, S. Huang, Y. Feng, A. Shirakawa, and K. Ueda, “784-nm amplified spontaneous emission from Tm3+-doped fluoride glass fiber pumped by an 1120-nm fiber laser,” Opt. Lett., vol.30, no.3, pp.269-271 (2005).
85. J. Dong, A. Shirakawa, S. Huang, Y. Feng, K. Takaichi, M. Musha, K. Ueda, and A. A. Kaminskii, “Stable laser-diode pumped microchip sub-nanosecond Cr,Yb:YAG self-Q-switched laser,” Laser Phys. Lett., vol.2, pp.387-391 (2005).
86. J. Dong, J. Lu, A. Shirakawa, and K. Ueda, “Optimization of the laser performance in Nd3+:YAG ceramic microchip lasers,” Applied Physics B, vol.80, no.1, pp.39-43 (2005).
87. Akira Shirakawa and Ken-ichi Ueda, “CW 7-W, 900-nm-wide supercontinuum source by phosphosilicate fiber Raman laser and high-nonlinear fiber,” Proc. SPIE, vol.5709, pp.199-205 (2005).
88. Akira Shirakawa, Keigo Matsuo, and Ken-ichi Ueda, “Fiber laser coherent array for power scaling, bandwidth narrowing, and coherent beam direction control,” Proc. SPIE, vol.5709, pp. 165-174 (2005).
89. S. Huang, G. Qin. Y. Feng, A. Shirakawa, M. Musha, and K. Ueda, “Single-Frequency Fiber Laser From Linear Cavity With Loop Mirror Filter and Dual-Cascaded FBGs,” IEEE Photon. Tech. Lett., vol.17, no.6, pp.1169-1171 (2005).
90. S. Huang, G. Qin. Y. Feng, A. Shirakawa, M. Musha, and K. Ueda, “1083 nm single frequency ytterbium doped fiber laser,” Laser Phys. Lett., vol.2, no.10, 498-501 (2005).
91. 白川晃，植田憲一：「シングルモードYb系ファイバーレーザーの高出力化の現状と動向(High-power single-mode Yb-doped fiber lasers: recent progress and future)」，レーザー研究 (Review of Laser Engineering), vol.33, no.4, pp.254-261 (2005). (invited paper)
92. K. Takaichi, H. Yagi, A. Shirakawa, K. Ueda, S. Hosokawa, T. Yanagitani, and A. A. Kaminskii, “Lu2O3:Yb3+ ceramic - a novel gain material for high-power solid-state lasers,” Phys. Stat. Sol. (a), vol.202, pp.R1-R3 (2005). (Rapid Research Letters).
93. A. A. Kaminskii, S. N. Bagayev, K. Ueda, K. Takaichi, J. Lu, A. Shirakawa, H. Yagi, T. Yanagitani, H. J. Eichler, and H. Rhee, “Observation stimulated Raman scattering in nanocrystalline Sc2O3 ceramics,” Laser Phys. Lett., vol.2, pp.30-35 (2005).
94. Akira Shirakawa, Jun Ota, Mitsuru Musha, Ken’ichi Nakagawa, Ken-ichi Ueda, Jacob Riis Folkenberg, and Jes Broeng, “Large-mode-area erbium-ytterbium-doped photonic-crystal fiber amplifier for high-energy femtosecond pulses at 1.55 mm” Optics Express, vol.13, no.4, pp. 1221-1227 (2005).
95. Takuya Nayuki, Kohji Marumoto, Takashi Fujii, Tetsuo Fukuchi, Koshichi Nemoto, Akira Shirakawa, and Ken-ichi Ueda, “Development of a differential-absorption lidar system for measurement of atmospheric atomic mercury by use of the third harmonic of an LDS-dye laser,” Appl. Opt. vol.43, pp.6487-6491 (2004).
96. J.-F. Bisson, A. Shirakawa, Y. Sato, Y. Senatsky, and K. Ueda, “Near-field diffractive optical pumping of a laser medium,” Opt. Rev., vol.11, pp.353-357 (2004).
97. S. Huang, Y. Feng, A. Shirakawa, M. Musha, and K. Ueda, “Single-frequency ytterbium fiber laser from linear cavity with loop mirror filter,” Jpn. J. Appl. Phys., vol.43, no.10B, pp.L1379-L1381 (2004).
98. Yan Feng, Shenghong Huang, Akira Shirakawa, and Ken-ichi Ueda, "Multiple-color cw visible lasers by frequency sum-mixing in a cascading Raman fiber laser," Opt. Exp., vol.12, no.9, pp.1843-1847 (2004).
99. A. Shirakawa, K. Takaichi, H. Yagi, M. Tanisho, J. -F. Bisson, J. Lu, K. Ueda, T. Yanagitani, and A. A. Kaminskii, "First mode-locked ceramic laser: Femtosecond Yb3+:Y2O3 ceramic laser," Laser Physics, vol.14, no.11, pp.1375-1381 (2004).
100. Yu. Senatsky, A. Shirakawa, Y. Sato, J. Hagiwara, J. Lu, K. Ueda, H. Yagi, and T. Yanagitani, "Nonlinear refractive index of ceramic laser media and perspectives of their usage in a high-power laser-driver," Laser Physics Letters, vol.1, no.10, pp.500-506 (2004).
101. Yan Feng, Shenghong Huang, Akira Shirakawa, and Ken-ichi Ueda, “589nm light source based on Raman fiber laser,” Jpn. J. Appl. Phys., vol.43, no.6A, pp.L722-L724 (2004).
102. 白川晃，植田憲一：「高輝度高出力ファイバーレーザー (High-power, high-brightness fiber laser)」，電気学会論文誌Ｃ (IEEJ Trans. EIS), vol.124, no.7, pp.1367-1374 (2004). (invited paper)
103. Yu. Barabanenko, S. Ivanov, E. Khazanov, H. Yagi, T. Yanagitani, K. Takaichi, J. Lu, J. Bisson, A. Shirakawa, K. Ueda, and A. Kaminskii, “Nonequilibrium acoustic phonons in Y3Al5O12-based nanocrystalline ceramics,” JETP Lett., vol.79, pp.342-345 (2004).
104. Y. Feng, J-F. Bisson, J. Lu, S. Huang, K. Takaichi, A. Shirakawa, M. Musha, and K. Ueda, “Thermal effects in quasi-continuous-wave Nd3+:Y3Al5O12 nanocrystalline powder random laser,” Appl. Phys. Lett., vol.84, pp.1040-1042 (2004).
105. J.-F. Bisson, J. Lu, K. Takaichi, Y. Feng, M. Tokuragawa, A. Shirakawa, A. Kaminskii, H. Yagi, Y. Yanagitani, and K. Ueda, “Nanotechnology is stirring up solid-state laser fabrication technology,” Recent Res. Devel. Applied Phys., vol.7, pp.475-496 (2004).
106. K. Takaichi, H. Yagi, J. Lu, J-F Bisson, T. Petrov, A. Shirakawa, K. Ueda, T. Yanagitani, and A. Kaminskii, “Yb3+-doped ceramic lasers,” OSA TOPS, vol.94, pp.217-221 (2004).
107. Akira Shirakawa, Keigo Matsuo, and Ken-ichi Ueda, “Fiber laser coherent array for power scaling of single-mode fiber laser,” Proc. SPIE, vol.5662, pp.482-487 (2004).
108. 白川晃，植田憲一：「高出力ファイバーレーザーの新展開～一層の高出力・高輝度化に向けて (Recent progress of high-power fiber laser−for higher power and brightness)」，光アライアンス (Optical Alliance), vol. 15, no.1, pp.20-27 (2004). (invited paper)
109. K. Takaichi, J. Lu, J-F Bisson, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. Kaminskii, “Highly efficient Yb-doped Y2O3 ceramic lasers at 1030nm and 1075nm,” Appl Phys. Lett., vol.84, pp.317-319 (2004).
110. J. Lu, K. Takaichi, T. Uematsu, J. F. Bisson, Y. Feng, A. Shirakawa, K. Ueda, H. Yagi, T. Yanagitani, and A. A. Kaminskii, “110 W ceramic Nd3+:Y3Al5O12 laser,” Appl. Phys. B., vol.79, pp.25-28 (2004).
111. A. Kaminskii, K. Ueda, A. Konstantinova, H. Yagi, T. Yanagitani, A. Butashin, V. Orekhova, J. Lu, K. Takaichi, T. Uematsu, M. Musha, and A. Shirakawa, “Lasing and refractive indices of nanocrystalline ceramics of cubic yttrium oxide Y2O3 doped with Nd3+ and Yb3+ ions,” Crystallography Reports, vol.48, pp.1041-1043 (2003).
112. A. Kaminskii, M. Akchurin, V. Alshits, K. Ueda, K. Takaichi, J. Lu, T. Uematsu, M. Musha, A. Shirakawa, V. Gabler, H. Eichiler, H. Yagi, T. Yanagitani, S. Bagayev, J. Fernandez, and R. Balda, “New data on the physical properties of monocrystalline laser ceramic on the base of Y3Al5O12,” Crystallography Reports, vol.48, pp.515-519 (2003).
113. A. Shirakawa, K. Takaichi, H. Yagi, J. -F. Bisson, J. Lu, M. Musha, K. Ueda, T. Yanagitani, T. S. Petrov, and A. A. Kaminskii, "Diode-pumped mode-locked Yb3+:Y2O3 ceramic laser," Optics Express, vol.11, no.11, pp.2911-2916 (2003).
114. M. Prabhu, A. Taniguchi, S. Hirose, J. Lu, M. Musha, A. Shirakawa, and K. Ueda, “Supercontinuum generation using Raman fiber laser,” Appl. Phys. B, vol.77, no.2-3, pp.205-210 (2003).
115. Shenghong Huang, Yan Feng, Akira Shirakawa, and Ken-ichi Ueda, “Generation of 10.5 W, 1178nm laser based on phosphosilicate Raman fiber laser,” Jpn. J. Appl. Phys., vol.42, no.12, pp.L1439-L1441 (2003).
116. 桑山哲朗，谷口篤，白川晃，武者満，セルゲイ・バジリエフ，植田憲一：「2mmファイバーレーザー」，レーザー学会第313回研究会報告　高機能固体レーザーとその応用，RTM-03-21, pp.17-21 (2003).
117. J-F. Bisson, Y. Feng, A. Shirakawa, H. Yoneda, J. Lu, H. Yagi, T. Yanagitani, and K. Ueda, “Laser damage threshold of ceramic YAG,” Jpn. J. Appl. Phys., vol.42, pp.L1025-L1027 (2003).
118. J. Lu, K. Takaichi, T. Uematsu, A. Shirakawa, M. Musha, K. Ueda, H. Yagi, T. Yanagitani, and A. Kaminskii, “Nd3+:YGdO3 ceramic laser,” Laser Physics, vol.13, pp.940-942 (2003).
119. J. Lu, J. F. Bisson, K. Takaichi, T. Uematsu, A. Shirakawa, M. Musha, K. Ueda, H. Yagi, T. Yanagitani, and A. Kaminskii, “Yb3+:Sc2O3 ceramic laser,” Appl. Phys. Lett., vol.83, pp.1101-1103 (2003).
120. K. Takaichi, J. Lu, A. Shirakawa, H. Yagi, K. Ueda, T. Yanagitani, and A. Kaminskii, “Yb3+ doped Y3Al5O12 ceramics - A new solid-state laser material-,” Phys. Stat. Sol. (a), vol.200, No. 1, pp.R5-R7 (2003).
121. Akira Shirakawa, Tomoki Sekiguchi, Keigo Matsuo, and Ken-ichi Ueda, “Scalable coherent beam combining of fiber lasers,” OSA TOPS, vol.83, Advanced Solid-State Photonics, pp.82-88 (2003).
122. J. Lu, J. Lu, T. Murai, A. Shirakawa, K. Ueda, T. Yanagitani, H. Yagi, V. Gabler, H. Eichler, and A. Kaminskii, “New highly efficient 1.3-mm cw laser generation in the 4F3/2 → 4I13/2 channel of the nanocrystalline Nd3+:Y3Al5O12 ceramic laser under diode pumping,” Phys. Stat. Sol. (a) vol.189, R11-R13 (2002).
123. J. Lu, K. Takaichi, T. Uematsu, A. Shirakawa, M. Musha, K. Ueda, H. Yagi, T. Yanagitani, A. Kaminskii Promising ceramic laser material: highly transparent Nd3+:Lu2O3 ceramic, Appl. Phys. Lett. vol.81, 4324-4326, 2002.12.
124. 関口知樹，斉藤智春，白川晃，武者満，植田憲一：「ファイバーレーザーのコヒーレント加算に関する研究」レーザー学会第302回研究会報告　高機能固体レーザーとその応用, RTM-02-25, pp.23-27 (2002).
125. Atsushi Taniguchi, Tetsuro Kuwayama, Akira Shirakawa, Mitsuru Musha, and Ken-ichi Ueda, and M. Prabhu, “1212 nm pumping of 2 mm Tm–Ho-codoped silica fiber laser,” Appl. Phys. Lett. vol.81, pp.3723-3725 (2002).
126. A. Shirakawa, T. Saitou, T. Sekiguchi, and K. Ueda, “Coherent addition of fiber lasers using a fiber coupler,” Optics Express, vol.10, no.21, pp.1167-1172 (2002).
127. J. Lu, K. Takaichi, T. Uematsu, A. Shirakawa, M. Musha, K. Ueda, H. Yagi, T. Yanagitani, and A. Kaminskii, “Yb3+:Y2O3 ceramics - a novel solid-state laser materials,” Jpn. J. Appl. Phys. vol.41, L1373-L1375 (2002).
128. Kazunori Takaichi, Jianren Lu, Tomoyo Murai, Tomohiro Uematsu, Akira Shirakawa, Ken-ichi Ueda, Hideki Yagi, Takagimi Yanagitani, and Alexander A. Kaminskii, “Chromium doped Y3Al5O12 ceramics – a novel saturable absorber for passively self-Q-switched one-micron solid state lasers,” Jpn. J. Appl. Phys., vol.41, pp.L96-98 (2002).
129. T. Kobayashi, A. Shirakawa, and T. Fuji, “Sub-5-fs transform-limited visible pulse source and its application to real-time spectroscopy,” IEEE J. Sel. Top. Quantum Electron., vol.7, pp.525 (2001).
130. A. Taniguchi, M. Prabhu, N. M. Kim, A. Shirakawa, and K. Ueda, “Development of pump source for Raman amplifiers and supercontinuum generation using P-doped fiber,” Technical Report of IEICE, vol.LQE2001-21, pp.29-34 (June 2001).
131. Takayoshi Kobayashi, Akira Shirakawa, Hiroshi Matsuzawa and Hachiro Nakanishi, “Real-time vibrational mode-coupling associated with ultrafast geometrical relaxation in polydiacetylene induced by sub-5-fs pulses,” Chemical Physics Letters, vol.321, no.5,6, pp.385-393 (2000).
132. T. Kobayashi and A. Shirakawa, “Tunable visible and near-infrared pulse generator in a 5 fs regime,” Appl. Phys. B, vol.70, pp.S239-S246 (2000).
133. 白川晃：「光パラメトリック増幅によるサブ5fsパルスの発生」，レーザー学会第264回研究会報告RTM-00-15, pp.16-19 (2000).
134. T. Kobayashi and A. Shirakawa, “Sub-10-fs tunable pulses in visible and NIR and visible sub-5-fs pulses generated by noncollinear OPA,” J. Luminescence, vol.87/89, pp.119 (2000).
135. A. Shirakawa, I. Sakane, M. Takasaka, and T. Kobayashi, “Sub-5-fs visible pulse generation by pulse-front-matched noncollinear optical parametric amplification,” Appl. Phys. Lett., vol.74, pp.2268-2270 (1999).
136. A. Shirakawa, I. Sakane, and T. Kobayashi, “Sub-5-fs Pulse Generation by Pulse-front-matched Optical Parametric Amplification,” in Ultrafast Phenomena XI, T. Elsaesser, J. G. Fujimoto, D. A. Wiersma, and W. Zinth eds. (Springer-Verlag, Berlin, 1998), pp.54-56.
137. 白川晃，坂根勲，小林孝嘉：「広帯域光パラメトリック増幅」，応用物理 vol.67 pp.1070-1071(1998).
138. Akira Shirakawa, Isao Sakane, and Takayoshi Kobayashi, “Pulse-front-matched optical parametric amplification for sub-10-fs pulse generation tunable in the visible and near-infrared,” Opt. Lett. vol.23, pp.1292-1294 (1998).
139. Akira Shirakawa and Takayoshi Kobayashi, “Noncollinear phase- and group-velocity matching of optical parametric amplifier for ultrashort pulse generation,” IEICE Trans. Electron., vol.E81-C, pp.246-253 (1998).
140. Akira Shirakawa and Takayoshi Kobayashi, “Noncollinearly phase-matched femtosecond optical parametric amplification with a 2000-cm-1 bandwidth,” Appl. Phys. Lett., vol.72, pp.147-149 (1998).
141. Lei Zhang, Akira Shirakawa, Shigeki Morita, and Takayoshi Kobayashi, “Nonlinear phase shift and detuning by second- and third-order nonlinearities,” Jpn. J. Appl. Phys., vol.36, pp.L1294-1296 (1997).
142. A. Shirakawa, H. W. Mao, and T. Kobayashi, “Highly efficient generation of blue-orange femtosecond pulses from intracavity-frequency-mixed optical parametric oscillator,” Opt. Commun., vol.123, pp.121-128 (1996).
143. 白川晃，小林孝嘉：「青～橙色域高効率フェムト秒光パラメトリック発振器」，レーザー研究, vol.23, pp.922-927 (1995).
144. H. W. Mao, A. Shirakawa, and T. Kobayashi, “Angular Tuning of Femtosecond Synchronously Pumped KTP IR OPO,” Chin. J. Lasers, vol.22, pp.902-907 (1995).
145. A. Shirakawa, H. W. Mao, and T. Kobayashi, “Highly-efficient generation of visible femtosecond pulses from optical parametric oscillator,” Technical Report of IEICE, LQE94-60 (1994).

著　作

研 究 業 績

研究業績