High resolution polarization nulling measurement system with magneto-optical modulator

被引：0
|
作者：
Zhang, Jian-Hua [1 ]
Liu, Li-Guo [1 ]
Zhu, He-Nian [1 ]
Lin, Yu-Xia [1 ]
机构：
[1] Dept. of Phys., Tsinghua Univ., Beijing 100084, China
来源：
Guangdianzi Jiguang/Journal of Optoelectronics Laser | 2001年 / 12卷 / 10期
关键词：
Ellipsometry - Light polarization;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The segment of automatic ellipsometer in document [1]-the measurement of polarization nulling has been improved. By using Terbium special glass (Verdet constant=0.31 min/Oe&middotcm) as modulator material, a new type of magneto-optical modulator and driver circuit have been designed and constructed. Polarized Light is modulated by DC and AC, using ultra-low noise frequency-selective amplifier and lock-in amplifier, the repeatability error S3 of nulling is not greater then 0.0004°.
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页码：1041 / 1042
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