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Outline

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.

Fields

Engineering, Interdisciplinary science and engineering

Keywords

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

Subjects

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

Selected Publications

1. Nishida, M., Notake, T., Takida, Y., Hirosawa, K., Ohata, N., and Minamide, H.:“High-repetition-rate injection-seeded terahertz-wave parametric generation pumped by a 1.5 μm sub-nanosecond laser”, Appl. Phys. Lett. 124, 12 121105 (2024).
2. Satou, A., Negoro, T., Narita, K., Hosotani, T., Tamura, K., Tang, C., Lin, T.-T., Retaux, P.-E., Takida, Y., Minamide, H., Suemitsu, T., and Otsuji, T.:“Gate-readout and a 3D rectification effect for giant responsivity enhancement of asymmetric dual-grating-gate plasmonic terahertz detectors”, Nanophotonics 12, 23 4283–4295 (2023).
3. Shirato, M., Takida, Y., Kanno, T., Matsuura, H., Niwano, Y., Minamide, H., Nakamura, K.:“Mutagenicity assessment of high-power 1.6-THz pulse laser radiation”, Photochem. Photobiol. 100, 146-158 (2023).
4. Muldera, J.E., Nawata, K., Takida, Y., Yadav, D., and Minamide, H.:“Tunable backward terahertz-wave parametric oscillator centered at a high frequency of 0.87 THz with injection seeding”, Opt. Express 31, 15 23966-23973 (2023).
5. 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).

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