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Non-ellipsometric detection of terahertz radiation using heterodyne EO sampling in the Cherenkov velocity matching scheme
Author(s) -
Masahiko Tani,
Tetsuya Kinoshita,
Tomohiro Nagase,
Kazuki Horita,
Christopher T. Que,
Elmer Estacio,
Kohji Yamamoto,
М. И. Бакунов
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.009277
Subject(s) - optics , terahertz radiation , cherenkov radiation , heterodyne detection , heterodyne (poetry) , terahertz spectroscopy and technology , physics , sampling (signal processing) , polarization (electrochemistry) , materials science , laser , detector , chemistry , acoustics
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.

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