1. Home
  2. Research
  3. Centers & Labs
  4. RIKEN Center for Advanced Photonics

RIKEN Center for Advanced Photonics Tera-Photonics Research Team

Team Leader: Hiroaki Minamide (D.Eng.)

Research Summary

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 Fields

  • Engineering

Related Research Fields

  • Interdisciplinary Science & Engineering


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

Selected Publications

  • 1. Tamura, K., Tang, C., Ogiura, D., Suwa, K., Fukidome, H., Takida, Y., Minamide, H., Suemitsu, T., Otsuji, T., and Satou, A.: Fast and sensitive terahertz detection with a current-driven epitaxial-graphene asymmetric dual-grating-gate field-effect transistor structure"
    APL Photonics. 7, 12, 126101 (2022).
  • 2. 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).
  • 3. 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).
  • 4. 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).
  • 5. 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).
  • 6. Takida, Y., Nawata, K., Notake, T., Otsuji, T., and Minamide, H.:
    "Optical up-conversion-based cross-correlation for characterization of sub-nanosecond terahertz-wave pulses"
    Opt. Express 30, 11217–11227 (2022).
  • 7. Minamide, H., Nawata, K., Moriguchi, Y., Takida, Y., and Notake T.:
    "Injection-seeded terahertz-wave parametric generator with timing stabilized excitation for nondestructive testing applications"
    Rev. Sci. Instrum. 92, 093002 (2021).
  • 8. Shibuya, K., Nawata, K., Nakajima, Y., Fu, Y., Takahashi, E., Midorikawa, K., Yasui, T., and Minamide, H.:
    "Characteristics of nonlinear terahertz-wave radiation generated by mid-infrared femtosecond pulse laser excitation"
    Appl. Phys. Express 14, 092004 (2021).
  • 9. Han, Z., Ohno, S., and Minamide, H.:
    "Electromagnetic wave tunneling from metamaterial antiparallel dipole resonance"
    Adv. Photonics Res. 2, 2000186 (2021).

Recent Research Results

Related Links

Lab Members

Principal investigator

Hiroaki Minamide
Team Leader

Core members

Yuma Takida
Research Scientist
Joselito Muldera
Research Scientist
Deepika Yadav
Research Scientist
Alexander De Los Reyes
Research Scientist
Yuehong Xu
Postdoctoral Researcher

Contact Information

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

Email: minamide [at] riken.jp