Non-ellipsometric detection of terahertz radiation using heterodyne EO sampling in the Cherenkov velocity matching scheme.
Non-ellipsometric detection of terahertz radiation using heterodyne EO sampling in the Cherenkov velocity matching scheme.
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DOI：
10.1364/oe.21.009277
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发表时间：
2013-04
期刊：
影响因子：
3.8
通讯作者：
M. Tani;T. Kinoshita;T. Nagase;K. Horita;C. Que;E. Estacio;Kohji Yamamoto;M. Bakunov
中科院分区：
文献类型：
--
作者：
M. Tani;T. Kinoshita;T. Nagase;K. Horita;C. Que;E. Estacio;Kohji Yamamoto;M. Bakunov
提出了一种用于探测太赫兹波的新的电光采样方案，我们称之为“外差电光采样”，并进行了实验验证。在这种外差电光采样方案中，在没有任何偏振光学的情况下，测量了非线性晶体中THz场诱导的光探测脉冲的强度变化。这种方法与非共线切伦科夫速度匹配技术相结合，与传统的椭圆偏振电光采样方法相比，可以使用更简单的光学装置有效且容易地检测到脉冲THz波。
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.