Development of terahertz-wave coherence tomography by widely tunable BW-TPO


  • Hiroaki Minamide ⋅ JP RIKEN Center for Advanced Photonics, Japan


A Backward Terahertz (THz) Wave Parametric Oscillator (BW-TPO) is a compact THz-wave source that generates high-brightness sub-THz waves with a pulse peak of up to 200 W and a continuously tunable frequency over almost the entire sub-THz region basically. This excellent performance is useful for THz-wave coherence tomography. In particular, the transmittance is completely different depending on the material, and the high intensity output has the potential to measure even difficult-to- penetrate materials such as CFRP and GFRP. In this report, the developed swept-source THz-wave coherence tomography will be described using BW-TPO with wide 90 GHz tunability around 0.5 THz.

About the Speaker

Hiroaki Minamide, RIKEN Center for Advanced Photonics, Japan

Hiroaki Minamide holds a B. Eng. (1993), M. Eng. (1996), and D. Eng. (1999) in Electrical, Information, and Physics Engineering from the School of Engineering at Tohoku University. He began his career as a Frontier Researcher at the Photodynamics Research Center at RIKEN in 1999 and subsequently worked as a Researcher in the THz Research Program in 2005. Over the years, he progressed to roles such as Deputy Team Leader (2008) and later Team Leader of the Tera-photonics Team at RIKEN from 2010 to the present. He currently serves as the Group Director of the Terahertz-wave research group at RIKEN since 2020. His research focuses on THz wave generation using a nonlinear optical crystal, THz wave detection through nonlinear wavelength conversion, and THz wave applications.
He received several awards as follows: IEEJ Excellent Presentation Award, Institute of Electrical Engineers of Japan, 1993; Award for the Presentation of an Excellent Paper, 24th Annual Meeting of the Laser Society of Japan, 2004; Research Promotion Award, Miyagi Science and Technology Promotion Fund, 2005; RIKEN BAIHO Award, RIKEN, 2022; 16th Kondo Prize (Technological Contribution Award), 2022. He is a senior member of the Laser Society of Japan and a regular member of various organizations such as the Japan Society of Applied Physics, the Institute of Electronics, Information and Communication Engineers, IEEE, and OSA.



Article ID



Invited Presentations



How to Cite

H Minamide, Development of terahertz-wave coherence tomography by widely tunable BW-TPO, Proceedings of the Samahang Pisika ng Pilipinas 42, SPP-2024-INV-1C-03 (2024). URL: