A new electro-optic (EO) sampling scheme, which we refer to as “heterodyne EO sampling”, for detection of pulsed terahertz (THz) waves is proposed and experimentally demonstrated. In this heterodyne EO sampling scheme, the intensity change in the optical probe pulse induced by a THz field in a nonlinear crystal is measured without any polarization optics. Applied in combination with the non-collinear Cherenkov velocity matching technique, this method allows one to detect pulsed THz waves efficiently and easily using a simpler optical setup as compared to the conventional ellipsometric EO sampling method.
© 2013 OSA
OSA Recommended Articles
Cherenkov-phase-matched nonlinear optical detection and generation of terahertz radiation via GaAs with metal-coating
Ramon Delos Santos, Shinpei Ozawa, Valynn Mag-usara, Syougo Azuma, Anthony Tuico, Vernalyn Copa, Arnel Salvador, Kohji Yamamoto, Armando Somintac, Kazuyoshi Kurihara, Hideaki Kitahara, Masahiko Tani, and Elmer Estacio
Opt. Express 24(22) 24980-24988 (2016)
Equations on this page are rendered with MathJax. Learn more.