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RIKEN Baton Zone Program Mid-Infrared Laser Source Laboratory

Team Leader: Shinichi Imai(Ph.D.)
Deputy Team Leader: Masaki Yumoto (Ph.D.)

Research Summary

Shinichi_Imai(Ph.D.) Masaki Yumoto

The mid-infrared region holds many molecular fingerprint signatures important in various sensing applications. We are going to realize mid-infrared laser light source which can be equipped with in the vehicles, drones and instrumentations for these purposes. The light source consists of fundamental laser light and optical-nonlinear devices. We would like to make their size much more compact with advanced concepts of laser configurations.

[Integrated Collaborative Research with: Oxide Corporation]

Main Research Fields

  • Engineering

Related Research Fields

  • Interdisciplinary Science & Engineering
  • Chemistry


  • mid-infrared
  • lasers
  • wavelength conversion
  • nonlinear optics
  • quantum electronics

Selected Publications

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

  • 1. Y. Okabayashi, Y. Tomihari, M. Yumoto, S. Imai.:
    "Burst pulse generation in Cr:ZnSe laser with mid-infrared tunability"
    Opt. Eng. 61(3), 036105 (2022)
  • 2. Y. Okabayashi, Y. Tomihari, M. Yumoto, S. Imai.:
    "Pulse-on-demand Cr:ZnSe laser"
    Proceedings Volume 11980, Solid State Lasers XXXI: Technology and Devices; 119800E (2022)
  • 3. Y. Okabayashi, Y. Tomihari, S. Imai, M. Yumoto, S. Wada, and Y. Furukawa.:
    "2 µm Tm:YAG laser with pulse-on-demand operation"
    Proc. SPIE LASE, paper 11664-2 (2021).
  • 4. M. Yumoto, N. Saito, and S. Wada.:
    "52 mJ/pulse, electronically tuned Cr:ZnSe MOPA system pumped with Tm:YAG laser"
    Opt. Express, Vol. 25, No. 26, pp. 32948-32956 (2017)
  • 5. T. Lin, A. Aoki, N. Saito, M. Yumoto, S. Nakajima, K. Nagasaka, S. Ichinose, K. Mizutani, S. Wada, Y. Izumi.:
    "Dental hard tissue ablation with a mid-infrared tunable, nanosecond pulsed Cr:CdSe laser"
    Lasers in Surgery and Medicine Vol, 39, 76-82 (2016).
  • 6. M. Yumoto, N. Saito, U. Takagi and S. Wada.:
    "Electronically tuned Cr:ZnSe laser pumped with Q-switched Tm:YAG laser"
    Opt. Express 23 (19), 25009-25016 (2015).
  • 7. M. Yumoto, N. Saito, Y. Urata, and S.Wada.:
    "128 mJ/pulse, laser-diode pumped, Q-switched Tm:YAG laser"
    IEEE Journal of Selected Topics in Quantum Electronics. 21, 1601305 (2015)
  • 8. *Y.Furukawa, K.Kitamura, A.Alexandrovski, R.K.Route, M.M.Fejer and G.Foulon.:
    "Green induced infrared absorption in Mg:LiNbO3"
    Appl. Phys. Lett. 78 1790. (2001)
  • 9. *Y.Furukawa, K.Kitamura, S.Takekawa, A.Miyamoto, M.Terao, and N.Suda.:
    "Photorefraction in LiNbO3 as a function of [Li]/[Nb] and MgO concentrations"
    Appl.Phys.Lett. 77 2494 (2000).

Lab Members

Principal investigator

Shinichi Imai
Team Leader

Core members

Masaki Yumoto
Deputy Team Leader
Yusuke Okabayashi
Postdoctoral Researcher
Satoshi Makio
Visiting Scientist
Junji Hirohashi
Visiting Scientist
Yasuhiro Tomihari
Visiting Technician

Contact Information

Email: shinichi.imai [at] riken.jp