Magnetooptic sensor based on field-induced birefringence compensation

被引：1
|
作者：
Li, Changsheng [1 ]
机构：
[1] Beihang Univ, Sch Instrumentat Sci & Optoelect Engn, Dept Optoelect Engn, Beijing 100191, Peoples R China
来源：
ADVANCED SENSOR SYSTEMS AND APPLICATIONS VI | 2014年 / 9274卷
关键词：
Magnetooptic sensor; birefringence compensation; electrooptic Kerr effect; Cotton-Mouton effect; magnetooptic Faraday effect; electrogyration effect; BISMUTH-GERMANATE CRYSTAL; SINGLE-CRYSTAL; ELECTROGYRATION; VOLTAGE;
D O I：
10.1117/12.2073609
中图分类号：
TP7 [遥感技术];
学科分类号：
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要：
Two novel magnetooptic sensors are proposed which are based on mutual compensation of external field-induced linear or circular birefringence. One is based on mutual compensation of the external field-induced linear birefringence produced by both magnetooptic Cotton-Mouton effect and electrooptic Kerr effect. The other one is based on mutual compensation of the external field-induced circular birefringence in crystals exhibiting both Faraday magnetooptic effect and electrogyration effect, such as lead molybdate (PbMoO4) crystal. The 50Hz ac magnetic field in the range of 167Gs was measured by means of electrogyration compensation. Compensating voltage was about 16.5V/Gs for single lead molybdate crystal with a length of 5mm along its principal optical axis. The two proposed magnetooptic sensors can be used in the closed-loop measurement of magnetic field.
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页数：9
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