Fast and accurate techniques for measuring the complex transmittance of liquid crystal light valves

Gerhard Bader; Roland Buerkle; Ernst H. Lueder; Norbert Fruehauf; Christof Zeile

doi:10.1117/12.271384

11 April 1997 Fast and accurate techniques for measuring the complex transmittance of liquid crystal light valves

Gerhard Bader, Roland Buerkle, Ernst H. Lueder, Norbert Fruehauf, Christof Zeile

Proceedings Volume 3015, Liquid Crystal Materials, Devices, and Applications V; (1997) https://doi.org/10.1117/12.271384
Event: Electronic Imaging '97, 1997, San Jose, CA, United States

Abstract

A highly accurate measurement technique has been developed and applied for characterization of the complex transmittance of liquid crystal light valves (LC-LV). The measurement setup is based on a two-beam interference with partially coherent light. An arc lamp light source enables measurements over a large range of wavelengths. We propose a new Fourier transform interference pattern evaluation technique with a high signal-to-noise ratio. Calculations are sped up by FFT algorithms. Measurement results of the complex transmittance are shown for a twisted nematic and a Freederickzs liquid crystal light valve, built in our laboratory.

Citation Download Citation

Gerhard Bader, Roland Buerkle, Ernst H. Lueder, Norbert Fruehauf, and Christof Zeile "Fast and accurate techniques for measuring the complex transmittance of liquid crystal light valves", Proc. SPIE 3015, Liquid Crystal Materials, Devices, and Applications V, (11 April 1997); https://doi.org/10.1117/12.271384

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