Centers & Labs

RIKEN Center for Advanced Photonics

Tera-Photonics Research Team

Team Leader: Hiroaki Minamide (D.Eng.)
Hiroaki  Minamide(D.Eng.)

Our team develops state-of-the-art frequency-tunable THz-wave sources which exploit new THz-wave application fields. A nonlinear optical process is utilized for realizing the THz-wave source which lights up the THz-wave gray zone, and our original design and method will be demonstrated. We develop THz sources with high output, wide tunability, high stability and narrow linewidth.

Active collaboration with both internal and external research groups is carried out for exploring new applications by development of instrument combined with new THz-wave sources. Advanced THz-wave technologies are also being developed in cooperation with industry to establish practical THz-wave sources and technologies in the world.

Main Research Field


Related Research Fields

Interdisciplinary science and engineering


  • Development of kilo-watt-power Terahertz-wave source
  • Sensitive Terahertz-wave detection
  • Terahertz-wave applications
  • Nondestructive measurements
  • Nonlinear optics

Selected Publications

  1. Y. Takida, K. Nawata, S. Suzuki, M. Asada, and H. Minamide,
    "Terahertz-wave differential detection based on simultaneous dual-wavelength up-conversion,"
    AIP Advances, Vol. 7, Issue 3, 035020. 1-5, (Mar. 2017).
  2. Y. Takida, K. Nawata, S. Suzuki, M. Asada, and H. Minamide,
    "Nonlinear optical detection of terahertz-wave radiation from resonant tunneling diodes,"
    Opt. Express, Vol. 25, No. 5, pp. 5389-5396, (Mar. 2017).
  3. Yu Tokizane, Kouji Nawata, Zhengli Han, Mio Koyama, Takashi Notake, Yuma Takida, and Hiroaki Minamide,
    "Tunable terahertz waves from 4-dimethylamino-N'-methyl-4'-stibazolium tosylate pumped with dual-wavelength injection-seeded optical parametric generation,"
    Appl. Phys. Express, Vol. 10, No. 2, PP. 022101-1-4, (Jan. 2017).
  4. Y. Takida, J. Shikata, K. Nawata, Y. Tokizane, Z. Han, M. Koyama, T. Notake, S. Hayashi, and H. Minamide,
    "THz-wave parametric gain of stimulated polariton scattering,"
    Phys. Rev. A, Vol. 93, Issue 4, 043836, (Apr. 2016).
  5. Hiroaki Minamide,
    "Development of High-Power Terahertz-Wave Sources for Finding Novel Applications,"
    IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, Vol 5, Issue 6, pp.1104-1109, (Nov. 2015).
  6. Shuzhen Fan, Feng Qi, Takashi Notake, Kouji Nawata, Yuma Takida, Takeshi Matsukawa, and Hiroaki Minamide,
    "Diffraction-limited real-time terahertz imaging by optical frequency up-conversion in a DAST crystal,"
    Optics Express, Vol.23, No.6, pp.7611-7618, (16 Mar 2015).
  7. Takashi Notake, Banghong Zhang, Yandong Gong, Hiroaki Minamide,
    "Development of a Stokes polarimeter system for the wide terahertz frequency region,"
    Japanese Journal of Applied Physics, Vol. 53, 092601, (Sep. 2014)
  8. Takeshi Matsukawa, Takashi Notake, Kouji Nawata, Shunsuke Inada, Shuji Okada, and Hiroaki Minamide
    "Terahertz-wave generation from 4-dimethylamino-N'-methyl-4'-stilbazolium p-bromobenzenesulfonate crystal: Effect of halogen substitution in a counter benzenesulfonate of stilbazolium derivatives,"
    Opt. Mater., 36, 12, 1995-1999, (Sep. 2014).
  9. Feng Qi, Shuzhen Fan, Takashi Notake, Kouji Nawata, Takeshi Matsukawa, Yuma Takida and Hiroaki Minamide
    "An ultra-broadband frequency-domain terahertz measurement system based on frequency conversion via DAST crystal with an optimized phase-matching condition,"
    Laser Phys. Lett., Vol. 11, No. 8, 085403-1-7, (Jun. 2014).
  10. Shin'ichiro Hayashi, Kouji Nawata, Takunori Taira, Jun-ichi Shikata, Kodo Kawase, Hiroaki Minamide,
    "Ultrabright continuously tunable terahertz-wave generation at room temperature,"
    SCIENTIFIC REPORTS, Vol. 4, PP.5045-1-6, (May 2014).

Lab Members

Principal Investigator

Hiroaki Minamide
Team Leader

Core Members

Takashi Notake
Research Scientist
Yoichi Ogata
Postdoctoral Researcher
Mio Koyama
Postdoctoral Researcher
Andreas Karsaklian Dal Bosco
Postdoctoral Researcher
kouji Nawata
Special Postdoctoral Researcher
Yuma Takida
Special Postdoctoral Researcher
Yu Tokizane
Special Postdoctoral Researcher
Zhengli Han
Special Postdoctoral Researcher

Contact information

519-1399 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-0845, Japan

Email: minamide [at]

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