[19a-PA2-1~26] 3.9 Terahertz technologies

[19a-PA2-4] Investigation of terahertz wave detection using Cherenkov phase matching optical waveguide structure.

〇Susumu Muto¹, Koji Suizu¹, Isao Morohashi², Yoh Ogawa², Shinya Nakajima², Norihiko Sekine², Iwao Hosako² (1.Chiba Inst.Tech, 2.NICT)

Keywords:Terahertz wave, Terahertz wave detection

We have investigated novel terahertz (THz) wave detection using nonlinear optical effect. Requirements for terahertz wave detection are high sensitivity, room temperature operation, high speed response, and low cost. In this study, we propose a terahertz wave detection method of terahertz wave by nonlinear interaction between dual wavelength light and terahertz wave. Terahertz waves was generated using a uni traveling carrier photodiode (UTC-PD). And terahertz wave was incident on the LiNbO₃waveguide with Si prism coupler. We were measured a power balance change of the dual wavelength light by the incident terahertz wave.