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RIKEN SPring-8 Center Laser-Driven Electron-Acceleration Technology Group

Group Director: Takunori Taira (Ph.D.)

Research Summary

Takunori  Taira(Ph.D.)

Laser-Driven Electron-Acceleration Technology Group will develop the compact, stable laser driven electron acceleration system, and its key technology towards the new generation of XFEL. Laser Acceleration Development Team proceed the R&D of GeV-class multi-staged Laser Wake-Field Acceleration (LWFA) with plasma photonic devices. Basic Laser Development Team will develop the compact power lasers based on these Tiny Integrated LAsers (TILA) to provide the extreme giant-power, and open their fruitful future of “Giant Micro-photonics” for the advanced electron accelerators.

Main Research Fields

  • Interdisciplinary Science & Engineering

Related Research Fields

  • Engineering
  • Quantum beam science
  • Applied physics
  • Physics


  • Laser Particle Acceleration
  • Laser Wakefield
  • Tiny Integrated Lasers (TILA)
  • Giant Micro-photonics
  • Giant Micro-photonics

Selected Publications

Papers with an asterisk(*) are based on research conducted outside of RIKEN.

  • 1. Jolly, S.W., Matlis, N.H., Ahr, F., Leroux, V., Eichner, T., Calendron, A.-L., Ishizuki, H., Taira, T., and Kartner, F.X., and Maier, A.R.:
    "Spectral phase control of interfering chirped pulses for high-energy narrowband terahertz generation"
    Nature Communications, vol. 10, Article number 2591 (2019).
  • 2. Kawasaki,T., Yahia, V., and Taira, T.:
    "100 Hz operation in the 10 PW/sr・cm2 class Nd:YAG Micro-MOPA"
    Opt. Express, vol. 27, no. 14, pp. 19555-19561 (2019)
  • 3. Zheng, L., Kausas, A., and Taira, T.:
    ">30 MW peak power from distributed face cooling tiny integrated laser"
    Opt. Express, vol. 27, no. 21, pp. 30217-30224 (2019).
  • 4. *Taira, T.:
    "Domain-controlled laser ceramics toward giant micro-photonics [Invited]"
    Opt. Mater. Express, vol. 1, no. 5, pp. 1040-1050 (2011)
  • 5. *Taira, T.:
    "RE3+-ion-doped YAG ceramic lasers,"
    IEEE J. Sel. Top. Quantum Electron., vol. 13, no. 3, May/June, pp. 798-809 (2007.5-6).
  • 6. N. Pathak, A. Zhidkov, Y. Sakai, Z. Jin, and T. Hosokai
    "Charge coupling in multi-stage laser wakefield acceleration"
    Phys. of Plasmas, 27, 033106 (2020)
  • 7. A. Zhidkov, N. Pathak, J. Koga, H. Kai, M. Kando, T. Hosokai.:
    "Characterization of ionization injection in gas mixtures irradiated by subpetawatt class laser pulses"
    Phys. Rev. Research, 2, 013216 (2020)
  • 8. Z.Jin, H. Nakamura, N. Pathak, Y. Sakai, A. Zhidkov, K. Sueda, R. Kodama, T. Hosokai.:
    "Coupling Effects in Multi-Stage Laser Wake-field Acceleration of Electrons"
    Scientific Reports, 9, 20045 (2019)
  • 9. N. Pathak, A. Zhidkov, T. Hosokai and R. Kodama.:
    "Spectral effects in the propagation of chirped laser pulses in uniform underdense plasma"
    Phys. Plasmas, 25, 1, 013119 (2018)
  • 10. Y. Sakai, N. Pathak, Z.Jin, A. Zhidkov, K. Sueda, H. Toran, Y. Tanizawa, T. Otsuka, j. Ogino, H. Nakamura, R. Kodama, T. Hosokai.:
    "Narrow band and energy selectable plasma cathode for multi-stage laser wake-field acceleration"
    Phys. Rev. ST Accel. Beams, 21, 10, 101301 (2018)



Related Links

Lab Members

Principal investigator

Takunori Taira
Group Director

Contact Information

1-1-1 Kouto, Sayo-cho
Sayo-gun, Hyogo
679-5148 Japan
Tel: +81-(0)791-58-0803 (PHS:7805)
Email: taira [at] spring8.or.jp


Laser Acceleration Development Team
Tomonao Hosokai (D.Sc.)
Basic Laser Development Team
Takunori Taira (Ph.D.)