Spatiotemporal birefringence measurements in an anti-ferroelectric liquid crystal cell by polarization interferometry

Kazuhiko Oka

doi:10.1117/12.2308726

23 July 1993 Spatiotemporal birefringence measurements in an anti-ferroelectric liquid crystal cell by polarization interferometry

Kazuhiko Oka

Author Affiliations +

Proceedings Volume 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology; 19838J (1993) https://doi.org/10.1117/12.2308726
Event: 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1993, Budapest, Hungary

Abstract

The adaptive interferometer using laser diode with tunable wavelength and fringes stabilization system was designed. The algorithm for automatical reconstruction of fringe pattern phase based on the searching of fringes intensity extremuma is suggested. Various vibrations of interferometer optical elements soften the contrast and deform the information that the frnge pattern contains. That's why interferometers are placed on the massive vibroisolated tables to suppress vibrations. This method of damping is rather expansive and can not be used in some experiments where interferometer must be placed near the source of stray vibrations. In these cases the so called active methods of damping are used. The main idea of the methods is to sustain the necessary parameters of the optical device by means of automatic control system. In this paper we suggest the automated interference system using tunable laser diode as a light source for optical surfaces and transparent media test. Optical part of the device is Fizeau interferometer with tunable laser diode.

Citation Download Citation

Kazuhiko Oka "Spatiotemporal birefringence measurements in an anti-ferroelectric liquid crystal cell by polarization interferometry", Proc. SPIE 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 19838J (23 July 1993); https://doi.org/10.1117/12.2308726

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