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Optics Letters

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  • Vol. 28, Iss. 17 — Sep. 1, 2003
  • pp: 1576–1578

Digital phase-shifting interferometer with an electrically addressed liquid-crystal spatial light modulator

Youichi Bitou  »View Author Affiliations


Optics Letters, Vol. 28, Issue 17, pp. 1576-1578 (2003)
http://dx.doi.org/10.1364/OL.28.001576


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Abstract

A digital phase-shifting interferometer with a liquid-crystal-display coupled, parallel aligned, nematic liquid-crystal spatial light modulator is developed. The optical phase shift in the Michelson-type polarization interferometer is achieved by a digital phase shift of a grating displayed on the spatial light modulator. Accurate experimental results of using the heterodyne system for π/2 phase steps were demonstrated. A phase-shifting interferometer with no moving parts and no requirement for calibration of the value of the phase shift was achieved.

© 2003 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(230.3720) Optical devices : Liquid-crystal devices

Citation
Youichi Bitou, "Digital phase-shifting interferometer with an electrically addressed liquid-crystal spatial light modulator," Opt. Lett. 28, 1576-1578 (2003)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-28-17-1576


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