Digital phase-shifting interferometer with an electrically addressed liquid-crystal spatial light modulator
2003; Optica Publishing Group; Volume: 28; Issue: 17 Linguagem: Inglês
10.1364/ol.28.001576
ISSN1539-4794
Autores Tópico(s)Optical Polarization and Ellipsometry
ResumoA 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 pi/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.
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