スイヅ　コウジ   Koji Suizu   水津　光司    所属   千葉工業大学  工学部 情報通信システム工学科    千葉工業大学  工学研究科 情報通信システム工学専攻    職種   教授
言語種別	英語
発行・発表の年月	2013/09
形態種別	学術雑誌
査読	査読あり
標題	THz-wave sensing via pump and signal wave detection interacted with evanescent THz waves
執筆形態	共著
掲載誌名	Optics Letters
巻・号・頁	38(18),pp.3687-3689
著者・共著者	Takuya Akiba, Naoya Kaneko, Koji Suizu, Katsuhiko Miyamoto, Takashige Omatsu
概要	We report a novel sensing technique that uses an evanescent terahertz (THz) wave, without detecting the THz wave directly. When a THz wave generated by Cherenkov phase matching via difference frequency generation undergoes total internal reflection, the evanescent THz wave is subject to a phase change and an amplitude decrease. The reflected THz wave, under the influence of the sample, interferes with the propagating THz wave and the changing electric field of the THz wave interacts with the electric field of the pump waves. We demonstrate a sensing technique for detecting changes in the electric field of near-infrared light, transcribed from changes in the electric field of a THz wave.