Faculty Information, Institute for Chemical Research, Kyoto University   [ English | Japanese ]


Tokita, Shigeki

Advanced Research Center for Beam Science - Laser Matter Interaction Science -
Assistant Professor
Ph.D. in Engineering
URL:http://laser.kuicr.kyoto-u.ac.jp/
E-mail: tokita@laser.kuicr.kyoto-u.ac.jp
Tel: 0774-38-3293
Fax: 0774-38-4509
Academic career
Research field
    Laser Engineering
Current research
  1. Ultrafast Electron Diffraction and Microscopy
  2. Mid-Infrared Fluoride Fiber Lasers
Selected publications
  1. Jahangiri, F.; Hashida, M.; Tokita, S.; Nagashima, T.; Hangyo, M.; Sakabe, S. , Directional elliptically polarized terahertz emission from air plasma produced by circularly polarized intense femtosecond laser pulses Appl. Phys. Lett. 99, 161505 (2011)
  2. Otani, K.; Tokita, S.; Nishoji, T.; Inoue, S.; Hashida, M.; Sakabe, S, Efficient laser-proton acceleration from an insulating foil with an attached small metal disk Appl. Phys. Lett. 99, 161501 (2011)
  3. Inoue, S.; Tokita, S.; Otani, K.; Hashida, M.; Sakabe, S., Femtosecond electron deflectometry for measuring transient fields generated by laser-accelerated fast electrons Appl. Phys. Lett. 99, 31501 (2011)
  4. Tokita, S.; Murakami, M.; Shimizu, S.; Hashida,M.; Sakabe, S., 12W Q-switched Er:ZBLAN fiber laser at 2.8 μm Opt. Lett. 36(15), 2812-2814 (2011)
  5. Tokita, S.; Otani, K.; Nishoji, T.; Inoue, S.; Hashida, M.; Sakabe, S., Collimated Fast Electron Emission from Long Wires Irradiated by Intense Femtosecond Laser Pulses Phys. Rev. Lett. 106, 255001 (2011)
  6. Hashida, M.; Miyasaka, Y.; Ikuta, Y.; Tokita, S.; Sakabe, S., Crystal structures on a copper thin film with a surface of periodic self-organized nanostructures induced by femtosecond laser pulses Phys. Rev. B 83, 235413 (2011)
  7. Inoue S, Tokita S, Nishoji T, Masuno S, Otani K, Hashida M, and Sakabe S, Single-shot microscopic electron imaging of intense femtosecond laser-produced plasmas Rev. Sci. Instrum. 81, 123302 (2010)
  8. Tokita S, Hirokane M, Murakami M, Shimizu S, Hashida M, Sakabe S, Stable 10 W Er:ZBLAN fiber laser operating at 2.71–2.88 μm Opt. Lett. 35, 3943-3945 (2010)
  9. Tokita S, Hashida M, Inoue S, Nishoji T, Otani K, and Sakabe S, Single-shot femtosecond electron diffraction with laser-accelerated electrons: Experimental demonstration of electron pulse compression Phys. Rev. Lett. 105, 215004 (2010)
  10. Okamuro K, Hashida M, Miyasaka Y, Ikuta Y, Tokita S, Sakabe S , Laser fluence dependence of periodic grating structures formed on metal surfaces under femtosecond laser pulse irradiation Phys. Rev. B 82, 165417 (2010)
  11. Hashida M, Namba S, Okamuro K, Tokita S, Sakabe S , Ion emission from a metal surface through a multiphoton process and optical feld ionization Phys. Rev. B 81, 115442 (2010)
  12. Tokita S, Murakami M, Shimizu S, Hashida M, Sakabe S, Liquid-cooled 24 W mid-infrared Er:ZBLAN fiber laser Opt. Lett. 34, 3062-3064 (2009)
  13. Tokita S, Inoue S, Masuno S, Hashida M, Sakabe S, Single-shot ultrafast electron diffraction with a laser-accelerated sub-MeV electron pulse Appl. Phys. Lett. 95, 111911 (2009)
  14. Sakabe S, Hashida M, Tokita S, Otani K, Laser energy scaling law for the yield of neutrons generated by intense femtosecond laser-cluster interactions Plasma and Fusion Research 4, 041 (2009)
  15. Hashida M, Mishima H, Tokita S, Sakabe S, Non-thermal ablation of expanded polytetrafluoroethylene with an intense femtosecond-pulse laser Opt. Express 17, 13116-13121 (2009)
  16. Nagashima T, Hirayama H, Shibuya K, Hangyo M,Hashida M, Tokita S, Sakabe S, Terahertz pulse radiation from argon clusters irradiated with intense femtosecond laser pulses Opt. Express 17, 8907-8912 (2009)
  17. Sakabe S, Hashida M, Tokita S, Namba S, Okamuro K, Mechanism for self-formation of periodic grating structures on a metal surface by a femtosecond laser pulse Phys. Rev. B 79, 033409 (2009)
  18. Niki H, Kuroyanagi T, Horiuchi Y, Tokita S, Laser isotope separation of zirconium for nuclear transmutation process J. Nucl. Sci. Tech. 5, 101-104 (2008)
  19. Tokita S, Hashida M, Masuno S, Namba S, Sakabe S, 0.3% energy stability, 100-millijoule-class, Ti:sapphire chirped-pulse eight-pass amplification system Opt. Express 16, 14875-14881 (2008)
  20. Yasuhara R, Tokita S, Kawanaka J, Kawashima T, Kan H, Yagi H, Nozawa H, Yanagitani T, Fujimoto Y, Yoshida H, Nakatsuka M, Cryogenic temperature characteristics of Verdet constant on terbium gallium garnet ceramics Opt. Express 15, 11255-11261 (2007)
  21. Akahane Y, Aoyama M, Ogawa K, Tsuji K, Tokita S, Kawanaka J, Nishioka H, and Yamakawa K, High-energy, diode-pumped, picosecond Yb:YAG chirped-pulse regenerative amplifier for pumping optical parametric chirped-pulse amplification Opt. Lett. 32, 1899-1901 (2007)
  22. Ogawa K, Akahane Y, Aoyama M, Tsuji K, Tokita S, Kawanaka J, Nishioka H, and Yamakawa K, Multi-millijoule, diode-pumped, cryogenically-cooled Yb:KY(WO4)2 chirped-pulse regenerative amplifier Opt. Express 15, 8598-8602 (2007)
  23. Tokita S, Kawanaka J, Izawa Y, Fujita M, and Kawashima T, 23.7-W picosecond cryogenic-Yb:YAG multipass amplifier Opt. Express 15, 3955-3961 (2007)
  24. Niki H, Motoki K, Yasui M, Horiuchi Y, Tokita S and Izawa Y, Selectivity and efficiency of laser isotope separation processes of gadolinium J. Nucl. Sci. Tech. 43, 427-431 (2006)
  25. Tokita S, Kawanaka J, Fujita M, Kawashima T, and Izawa Y, Efficient high-average-power operation of Q-switched cryogenic Yb:YAG laser oscillator Jpn. J. Appl. Phys. 44, pp. L1529-L1531 (2005)
  26. Kawanaka J, Tokita S, Nishioka H, Fujita M, Yamakawa K, Ueda K, and Izawa Y, Dramatically Improved Laser Characteristics of diode-pumped Yb-doped materials at low temperature Laser Phys. 15, 1306-1312 (2005)
  27. Niki H, Tanikawa T, Tokita S, and Izawa Y, Measurement of hyperfine structure and isotope shift of transitions in gadolinium using blue diode laser Jpn. J. Appl. Phys. 44, 6075-6078 (2005)
  28. Tokita S, Kawanaka J, Fujita M, Kawashima T, and Izawa Y, Sapphire-conductive end-cooling of high power cryogenic Yb:YAG lasers Appl. Phys. B 80, 635-638 (2005)
  29. Shoji T, Tokita S, Kawanaka J, Fujita M, and Izawa Y, Quantum-defect-limited operation of diode-pumped Yb:YAG laser at low temperature Jpn. J. Appl. Phys. 43, L496-L498 (2004)
  30. Tokita S, Izawa Y, and Niki H, Selectivity loss due to magnetic field in laser isotope separation of gadolinium based on polarization selection rules J. Nucl. Sci. Tech. 40, 1014-1018 (2003)

Update: Apr 02,2012