Adaptive Holography in Liquid Crystal Light-Valves

By performing two-wave mixing experiments in a liquid crystal light-valve, optical beam amplification is obtained as a strongly resonant process to which a narrow frequency bandwidth is associated. This property is exploited to realize adaptive holographic interferometric systems able to efficiently...

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Bibliographic Details
Published inMaterials Vol. 5; no. 9; pp. 1546 - 1559
Main Authors Bortolozzo, Umberto, Residori, Stefania, Huignard, Jean-Pierre
Format Journal Article Book Review
LanguageEnglish
Published Basel MDPI AG 01.09.2012
MDPI
Subjects
adaptive holography
liquid crystals
picometer detection
Review
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Summary:By performing two-wave mixing experiments in a liquid crystal light-valve, optical beam amplification is obtained as a strongly resonant process to which a narrow frequency bandwidth is associated. This property is exploited to realize adaptive holographic interferometric systems able to efficiently detect displacements as small as fraction of picometers. Pressure radiation induced deformations of a reflecting membrane are measured with the same type of system. Then, when used with complex wavefronts, like speckle fields, the LCLV-based interferometer allows to detect extremely small phase modulations. The examples shown demonstrate the potentialities of the light-valve for dynamic holography applications.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma5091546