Terahertz (THz) wave is one of the electromagnetic waves lies between radio waves and infrared waves, and shares the characteristics of both. It has many potential applications in wide area.

We are working on the development of high power and compact THz wave sources based on wavelength conversion technique in nonlinear crystal with lasers. Our unique THz wave sources allow us to detect reagents under high absorbed shielding materials, 3D THz computed tomography and many other imaging which were difficult with other systems in the past.

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K. Kawase, S, Mine, K. Murate, “Injection seeded THz parametric generation, detection, and applications (Invited),” International Conference on Microwave & THz Technologies and OptoElectronics (IRPhE'2022), MW9, National Academy of Sciences in Yerevan, Armenia (Sept. 27-30, 2022).


K. Murate, K. Kawase, "Real-time spectroscopic measurement using terahertz parametric generator (Keynote)," 2022 IEEE Summer Topicals Meeting Series, TuF1.2, Cabo San Lucas, Mexico (Jul. 11-13, 2022)


K. Murate, and K. Kawase, "Real-time measurement system using multi-wavelength THz-wave parametric generation and detection (invited)," the 8th International Conference on Antennas and Electromagnetic Systems (AES 2022), Kenzi Rose Garden, Marrakech, Morocco, Online meeting (May 24-27, 2022)


K. Kawase, S. Mine, and K. Murate, “Transmission THz spectroscopy through thick shielding (Invited)" Colloquium Lecture at CSIR-NPL (Council of Scientific & Industrial Research, National Physical Laboratory), New Delhi, Ministry of Science and Technology, Govt. of India, Online meeting (May 13, 2022).


S. Mine, K. Kawase, and K. Murate, “Multi-Wavelength Terahertz Parametric Generator Using a Seed Laser Based on Four-Wave Mixing,” Photonics, vol. 9, no. 4, 258 (2022)


Sota Mine, Kodo Kawase, and Kosuke Murate, "Noise-free terahertz-wave parametric generator," Optics Letters, vol. 47, No. 5, pp.1113-1116, (2022)


K.Murate, and K. Kawase, "Development of terahertz parametric generator for real-time measurement (invited)," 9th Russia-Japan-USA-Europe Symposium on Fundamental & Applied Problems of Terahertz Devices & Technologies (RJUSE TeraTech-2021), Th4-2, Tohoku University, Japan (Nov. 1-Nov. 4, 2021).


K Murate, H Kanai, K Kawase, "Application of Machine Learning to Terahertz Spectroscopic Imaging of Reagents Hidden by Thick Shielding Materials," IEEE Transactions on Terahertz Science and Technology, Vol,11, Issue 6, 620 - 625 (2021)


Kosuke Murate, Kodo Kawase, "Development of a Terahertz Parametric Generator/Detector for Nondestructive Testing(invited)," JSAP-OSA Joint Symposia, E 12a-N405-2, Online meeting(Sep.10-13,2021).


Sota Mine, Kodo Kawase, Kosuke Murate, "Development Of A High Signal To Noise Ratio Terahertz-wave Parametric Generator (keynote)," 46th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2021), Mo-AM-1-1 5089155 , Online meeting (Aug. 29-Sep. 3, 2021).


Kosuke Murate, Kohei Nagase, Kodo Kawase, "Wide Dynamic Range Imaging System Using Three-stage Terahertz Parametric Detector (keynote)," 46th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2021), Mo-AM-6-1 5094375 , Online meeting (Aug. 29-Sep. 3, 2021).


K. Kawase and K. Murate, "Injection-seeded THz parametric generator, detector, and applications (Invited)," Instruments Research and Development Establishment (IRDE), Diamond Jubilee Lecture Series, Virtual Event (Mar. 23, 2021).


S. Mine, K. Kawase, K. Murate,"High-power ASE-free fast wavelength-switchable external cavity diode laser," Applied Optics, vol.60, 1953-1957 (2021).