Terahertz magneto-optical polarization modulation spectroscopy

被引：28
|
作者：
George, Deepu K. [1 ]
Stier, Andreas V. [1 ]
Ellis, Chase T. [1 ]
McCombe, Bruce D. [1 ]
Cerne, John [1 ]
Markelz, Andrea G. [1 ]
机构：
[1] SUNY Buffalo, Dept Phys, Buffalo, NY 14260 USA
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2012年 / 29卷 / 06期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1364/JOSAB.29.001406
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the development of new terahertz (THz) techniques for rapidly measuring the complex Faraday angle in systems with broken time-reversal symmetry. Using the cyclotron resonance of a GaAs two-dimensional electron gas in a magnetic field, we have tested the performance of the techniques. We have made polarization modulation, high sensitivity (< 1 mrad) narrowband rotation measurements with a cw optically pumped molecular gas laser, and, by combining the distinct advantages of THz time domain spectroscopy and polarization modulation techniques, we have demonstrated rapid broadband rotation measurements to < 5 mrad precision. (C) 2012 Optical Society of America
引用
收藏
页码：1406 / 1412
页数：7
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