Journal
OPTICAL MATERIALS EXPRESS
Volume 6, Issue 3, Pages 961-970Publisher
OPTICAL SOC AMER
DOI: 10.1364/OME.6.000961
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Funding
- National Research Program of Slovenia [P1-0192]
- University of Vienna
- [BI-AT/09-10-009]
- [BI-AT/11-12-015]
- [OEAD-WTZ SI19/2009]
- [OEAD-WTZ SI-07-2011]
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The angular dependence of the diffraction efficiency of volume-type holographic gratings recorded in a single-domain light-sensitive liquid crystalline elastomer was investigated. Usually this dependence is expected to be very similar for intensity gratings and for polarization gratings. However, our measurements resolved a profound difference between the two types of the gratings: a typical Bragg peak of the diffraction efficiency is observed only for intensity gratings, while polarization gratings exhibit a profound dip at the Bragg angle. The appearance of this dip is explained by strongly anisotropic optical absorption of the actinic light during the recording process. (C) 2016 Optical Society of America
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