INVESTIGATION OF HIGH-RESOLUTION ANGLE SENSING WITH LASER MODE-SPLIT TECHNOLOGY

Authors
ZHANG SL LI KL REN M DENG ZB
Citation
Sl. Zhang et al., INVESTIGATION OF HIGH-RESOLUTION ANGLE SENSING WITH LASER MODE-SPLIT TECHNOLOGY, Applied optics, 34(12), 1995, pp. 1967-1970
Citations number
6
Categorie Soggetti
Optics
Journal title
Applied optics → ACNP
ISSN journal
00036935
Volume
34
Issue
12
Year of publication
1995
Pages
1967 - 1970
Database
ISI
SICI code
0003-6935(1995)34:12<1967:IOHASW>2.0.ZU;2-D
Abstract
We present a new method of angular measurement, which is to rotate a 1 5-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 he rtz) represents the angle of rotation. The experimental devices used a re described. The stability of the beat frequency is 0.78 kHz (1 sigma ). A sensitivity of 2.62 x 10(4) Hz/'', where '' is angular seconds, h as been reached and the repeatability is 0.3 ''. The principal error f actors are discussed.