Open AccessLaser heterodyne interferometer for simultaneous measuring displacement and angle based on the Faraday effect
Author(s) -
Enzheng Zhang,
Qun Hao,
Benyong Chen,
Liping Yan,
Yanna Liu
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.025587
Subject(s) - optics , interferometry , displacement (psychology) , heterodyne (poetry) , laser , retroreflector , astronomical interferometer , physics , faraday effect , acoustics , psychology , quantum mechanics , magnetic field , psychotherapist
A laser heterodyne interferometer for simultaneous measuring displacement and angle based on the Faraday effect is proposed. The optical configuration of the proposed interferometer is designed and the mathematic model for measuring displacement and angle is established. The influences of the translational, lateral and rotational movements of the measuring reflector on displacement and angle measurement are analyzed in detail. The experimental setup based on the proposed interferometer was constructed and a series of experiments of angle comparison and simultaneous measuring displacement and angle were performed to verify the feasibility of the proposed interferometer for precision displacement and angle measurement.