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
川瀬晃道, “テラヘルツパラメトリック光源とその応用(招待講演),” 第2回フォトニクス技術フォーラム, 大阪科学技術センター, 大阪 (Oct. 13, 2023).
K. Murate, S. Mine, and K. Kawase, "Practical measurement system using terahertz parametric generator and detector (Invited)," 10th International Symposium on Terahertz-Related Devices and Technologies (TeraTech2023), Fr2-3, University of Aizu, Aizuwakamatsu, Japan (Sept. 4-8, 2023).
K. Murate, S. Mine, and K. Kawase, "Non-destructive identification through thick materials using a terahertz parametric generator and detector (Invited)," SPIE OPTICS+PHOTONICS, 12683-1, San diego convention center, San diego, USA (Aug. 20-22, 2023).
村手宏輔, 嶺颯太, 川瀬晃道, "テラヘルツパラメトリック発生／検出による高ダイナミックレンジ分光識別(招待講演),” 第27回福井セミナー, 福井大学, 福井 (Aug.9-10, 2023).
K. Murate, S. Mine, Y. Torii, H. Inoueand, and K. Kawase, "Wide dynamic range and real-time reagent identification and imaging using multi-wavelength terahertz parametric generation and machine learning," Scientific Reports, vol. 13, Article number 12743 (2023).
K. Murate, S. Mine, and K. Kawase, "Terahertz Parametric Generators and Detectors for Nondestructive Testing Through High-Attenuation Packaging Materials," IEEE Journal of Selected Topics in Quantum Electronics, vol. 29, issue 5, Article number 8500813 (2023).
Sota Mine, Kosuke Murate, Kodo Kawase, “Injection-seeded terahertz parametric generation using high power seeding (invited),” 2nd Workshop on Progress in Nonlinear Photonics and Applications, Tu.D6.2, University of Politehnica Bucharest, Bucharest, Romania (July 2- 6, 2023).
K. Murate, S, Mine, K. Kawase, “Terahertz parametric generator/detector for nondestructive testing (Invited),” 25th Photonics North Conference, DHPL-5.4, Palais des congrès de Montréal, Montréal, Canada (June 12- 15, 2023).
K. Kawase, S, Mine, K. Murate, “Detection of concealed reagents using THz parametric generator (Invited),” The 9th International Conference on Antennas and Electromagnetic Systems (AES 2023), 2A7, Palacio de Congresos, Torremolinos, Spain (June 5- 8, 2023).
K. Murate, R. Kawaguchi, S. Hayashi, and K. Kawase. " Pulse Burst Multiwavelength Terahertz-Wave Spectroscopic Measurement Using Parametric Wavelength Conversion," IEEE Transactions on Terahertz Science and Technology, vol. 13, no. 5, pp. 561-564 (2023).
K. Kawase, S, Mine, K. Murate, “THz parametric generation/detection and applications (Invited),” Korea-Japan Workshop on Terahertz Science and Technology 2023, Kyoto University, Kyoto, Japan (April 3, 2023).
Sota Mine, Mitsuki Abe, Kodo Kawase, and Kosuke Murate, "Efficient Terahertz Parametric Source Using Flat Pump Beam," IEEE Transactions on Terahertz Science and Technology, vol. 13, No. 2, pp.153 - 157 (2023)
川瀬晃道, 村手宏輔 “遮蔽物越しのテラヘルツ分光イメージング技術(招待講演),” 2023年度日本ゴム協会東海支部アドバンストセミナー, WEB開催 (Jan. 20, 2023)
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).