Non-ellipsometric detection of terahertz radiation using heterodyne EO sampling in the Cherenkov velocity matching scheme

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 nonli...

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Bibliographic Details
Main Authors: Tani, Masahiko, Kinoshita, Tetsuya, Nagase, Tomohiro, Horita, Kazuki, Que, Christopher T., Estacio, Elmer S., Yamamoto, Kohji, Bakunov, Michael I.
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Published: Animo Repository 2013
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Online Access:https://animorepository.dlsu.edu.ph/faculty_research/11901
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Institution: De La Salle University
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Summary: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.