Tera-Photonics Research Team

Team Leader

Hiroaki Minamide


Hiroaki Minamide


Access map

minamide [at] riken.jp

Tera-Photonics Research Team,
RIKEN Center for Advanced Photonics

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

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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.


Engineering, Interdisciplinary science and engineering


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


  1. High-output, frequency-agile, ultra-widely tunable THz-wave sources
  2. High-sensitive THz-wave detection
  3. THz-wave applications using frequency-agile THz-wave sources
  4. THz spectroscopic database

Backward terahertz parametric oscillator(left) and organic nonlinear crystals(right)

Selected Publications

  1. Nawata, K., Tokizane, Y., Takida, Y., Minamide, H.:"Tunable Backward Terahertz-wave Parametric Oscillation," Scientific Reports, 9, 726, 1-6, (2019).
  2. Moriguchi, Y., Tokizane, Y., Takida, Y., Nawata, K., Eno, T., Nagano, S., Minamide, H.:“High-average and high-peak output-power terahertz-wave generation by optical parametric down-conversion in MgO:LiNbO3,” Appl. Phys. Lett., 113, 121103, (2018).
  3. Han, Z., Ohno, S., Tokizane, Y., Nawata, K., Notake, T., Takida Y., Minamide, H.:“Off-resonance and in-resonance metamaterial design for a high-transmission terahertz-wave quarter-wave plate,” Optics Letters, Vol. 43, Issue 12, pp. 2977-2980, (2018).
  4. Bernerd, C., Segonds, P., Debray, J., Notake, T., Koyama, M., Minamide, H., Ito, H., Boulanger, B.: "Quadratic nonlinear optical properties of the organic N-benzyl-2-methyl-4-nitroaniline (BNA) biaxial crystal," Optics Letters, Vol. 43, No.8, pp.1818-1821, (2018).
  5. Han, Z., Ohno, S., Tokizane, Y., Nawata, K., Notake, T., Takida, Y., Minamide, H.:“Thin terahertz-wave phase shifter by flexible film metamaterial with high transmission,” Optics Express, Vol. 25, Issue 25, pp. 31186-31196, (2017).


Hiroaki MinamideTeam Leader
Takashi NotakeResearch Scientist
Kouji NawataResearch Scientist
Yu TokizaneResearch Scientist
Yuma TakidaResearch Scientist
Zhengli HanSpecial Postdoctoral Researcher
Yoshikiyo MoriguchiVisiting Scientist
Mio KoyamaPostdoctoral Researcher
Andreas Karsaklian Dal BoscoPostdoctoral Researcher