Abstract
We present a new method of angular measurement, which is to rotate a 15-mm-diameter, 3-mm-thick crystal quartz plate in a He–Ne laser cavity to produce a laser mode split. The magnitude of the mode split (in hertz) represents the angle of rotation. The experimental devices used are described. The stability of the beat frequency is 0.78 kHz (1σ). A sensitivity of 2.62 × 104 Hz/″, where ″ is angular seconds, has been reached and the repeatability is 0.3″. The principal error factors are discussed.
© 1995 Optical Society of America
Full Article | PDF ArticleMore Like This
Jong Rak Park, Tai Hyun Yoon, Myung Sai Chung, and Hai-Woong Lee
Appl. Opt. 38(21) 4566-4569 (1999)
Jinyun Ding, Qibo Feng, Lianqing Zhang, and Shulian Zhang
Appl. Opt. 47(30) 5631-5636 (2008)
Jørgen Bendtsen
Appl. Opt. 34(18) 3377-3379 (1995)