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Optical Path Difference Measurement Techniques for SLMs

Published

Author(s)

Patrick J. Grother, D P. Casasent

Abstract

A simple measurement method to obtain 2-D spatial point-by-point optical path difference (OPD) data for spatial light modulators (SLMs) is described. A simple imaging system is used that allows measurements of all SLM parameters on the same laboratory systems. Simple digital processing of the output image for a uniform applied input voltage provides OPD data. Simple methods to confirm amplitude-mostly SLM operations are also provided. Results are presented for Kopin and CRL liquid crystal SLMs.PACS Classification codes - 42.79, 42.62, 42.87/
Citation
Optics Communications

Keywords

liquid crystals, optical path difference, spatial light modulators

Citation

Grother, P. and Casasent, D. (2001), Optical Path Difference Measurement Techniques for SLMs, Optics Communications (Accessed July 23, 2024)

Issues

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Created March 1, 2001, Updated February 19, 2017