APPLICATIONS OF A NOVEL PHASE-SHIFT METHOD USING A COMPUTER-CONTROLLED POLARIZATION MECHANISM

Authors
JIN GC BAO N CHUNG PS
Citation
Gc. Jin et al., APPLICATIONS OF A NOVEL PHASE-SHIFT METHOD USING A COMPUTER-CONTROLLED POLARIZATION MECHANISM, Optical engineering, 33(8), 1994, pp. 2733-2737
Citations number
7
Categorie Soggetti
Optics
Journal title
Optical engineering → ACNP
ISSN journal
00913286
Volume
33
Issue
8
Year of publication
1994
Pages
2733 - 2737
Database
ISI
SICI code
0091-3286(1994)33:8<2733:AOANPM>2.0.ZU;2-E
Abstract
A new computer-controlled phase-shifting apparatus based on polarizati on techniques is developed. This apparatus changes phase only by rotat ing a polarizer using a precise step motor and a specially designed de celerator. The precision of this method can be higher than other metho ds because of the accurate control of the rotating angle. Four applica tions of this technique to optical interferometry and 3-D shape measur ements are presented.