Magneto-optical method for measuring mechanical quantities

被引:2
|
作者
Didosyan, Y [1 ]
Hauser, H [1 ]
Nicolics, J [1 ]
Hanreich, G [1 ]
Wolfmayr, H [1 ]
机构
[1] Vienna Univ Technol, Ins Ind Elect & Mat Sci, Vienna, Austria
基金
奥地利科学基金会;
关键词
displacement measurement; Faraday rotation; orthoferrite;
D O I
10.1109/TIM.2002.803291
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The progress of many optical methods for measuring geometrical quantities is restricted because of a lack of appropriate light detection techniques. Existing photodetectors-charge-coupled devices and position sensitive detectors-do not comply with the demand of high spatial accuracy combined with high sampling rates. In this paper a magneto-optical method for measuring the positions of light beams is described. It is based on spatial light modulation produced by domain wall motion in an orthoferrite crystal. The presented method provides a measurement accuracy of 0.8 mum and a sampling time of about 1 mus.
引用
收藏
页码:730 / 733
页数:4
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