Tera-Photonics Research Team

Team Leader

Hiroaki Minamide


Photo: Hiroaki Minamide


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Tera-Photonics Research Team,
RIKEN Center for Advanced Photonics

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


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), PPLN crystals(top right), and THz-wave imaging (bottom right)

Selected Publications

  1. Wang, Y., Hu, C., Yan, C., Chen, K., Takida, Y., Minamide, H., Xu, D., and Yao, J.: “Highly sensitive multi-stage terahertz parametric upconversion detection based on a KTiOPO4 crystal” , Opt. Lett., 47, 22, (2022).
  2. Suzuki, D., Takida, Y., Kawano, Y., Minamide, H., Terasaki, N.: “Carbon nanotube-based, serially connected terahertz sensor with enhanced thermal and optical efficiencies” , Sci. Technol. Adv. Mater., 23, 1, 2090855, (2022).
  3. Han, Z., Takida, Y., Ohno, S., and Minamide, H.: “Terahertz Fresnel-zone-plate thin-film lens based on high-transmittance double-layer metamaterial phase shifter” , Opt. Express, 30, 11, 18730-18742, (2022).
  4. Tokizane, Y., Ohno, S., Takida, Y., Shikata, J., and Minamide, H.: “Incident-angle-dependent extraordinary transmission of the terahertz bull’ s eye structure” , Physical Review Applied, 17, 5, 054020, (2022).
  5. Minamide H., Nawata K., Takida Y., Notake T.: “Study on Backward Terahertz-Wave Parametric Oscillation and Its Application to Nondestructive Testing” , The Review of Laser Engineering, 50, 4, 172-176, (2022).


Hiroaki MinamideTeam Leader
Yuma TakidaResearch Scientist
Joselito MulderaResearch Scientist
Deepika YadavResearch Scientist
Alexander De Los ReyesResearch Scientist
Yuehong XuPostdoctoral Researcher