周波数が0.3～10THz付近の電磁波をテラヘルツ波と呼び、電波と光の特徴を併せ持つことから多くの応用が期待されています。川瀬研究室ではレーザー光の波長変換技術を用いて既存の自由電子レーザーなどに較べはるかに小型簡便な広帯域波長可変テラヘルツ (THz) 光源の開発に成功し、さらなる高性能化、小型化などに関する研究を進めています。
また、新しいテラヘルツイメージング技術の研究開発を進めています。この技術を用いて、郵便物検査、覚醒剤・爆発物所持検査、医薬品検査、などへの応用が期待されます。
川瀬教授のテラヘルツ波に関する講義動画はこちら
English page
「テラヘルツ鉱石」等の健康グッズに関して
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)
川瀬晃道, 村手宏輔, "テラヘルツ波パラメトリック発生検出システムの進化 (招待講演)", 光産業技術振興協会 第464回光協会マンスリーセミナー, WEB開催 (Jan. 11, 2022).(2021)
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).
村手宏輔, 令和３年度テラヘルツ応用システム研究会, テラヘルツ研究会賞 (Aug. 5, 2021).受賞論文題目 "多波長テラヘルツパラメトリック光源と機械学習を用いたリアルタイム分光識別"
村手宏輔, 2021年度レーザー学会学術講演会第41回年次大会, 優秀論文発表賞 (May 31, 2021) 受賞論文題目 "離散波長可変テラヘルツパラメトリック発生を用いたリアルタイム分光器"
川瀬晃道, "テラヘルツ波技術 (依頼講演)," 情報機構セミナー, Webinar (May 31, 2021).
Sota Mine, Kodo Kawase, and Kosuke Murate, "Real-time wide dynamic range spectrometer using a rapidly wavelength-switchable terahertz parametric source" Optics Letters, vol. 46, No. 11, pp.2618-2621, (2021)