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Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/531

Title: Diffraction measurement and analysis of slanted holographic polymer dispersed liquid crystal
Authors: Sun, Xiaohong
Tao, Xiaoming
Ye, Tingjin
Szeto, Yau-shan
Cheng, Xiaoyin
Subjects: Holographic gratings
Polymer dispersed liquid crystals
Light diffraction
Scanning electron microscopy
Optical films
Bragg gratings
Light interferometers
Issue Date: 19-Aug-2005
Publisher: American Institute of Physics
Citation: Journal of applied physics, 19 Aug. 2005, v. 98, 043510, p. 1-5.
Abstract: In this article, slanted holographic polymer dispersed liquid-crystal films are prepared by using a single-prism interferometer. Their diffraction characteristics are measured at various incident angles. Based on the coupled-wave theory of diffraction efficiency and incident angles, the grating period, film thickness, and slanted angle of the volume grating are derived. A good agreement is demonstrated between the experimental and theoretical results, and supported by scanning electron microscopy observation. The electrical switching behavior of the grating is also described. The diffraction efficiency changes from 65% to a stable value of 10% at an electric field of 33 V/µm. On the other hand, based on the theoretical prediction of diffraction efficiency, the optimum film thickness and Bragg grating period are determined, which sheds light on the implementation of our experiments.
Rights: © 2005 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in X.H. Sun et al., J. Appl. Phys. 98, 043510 (2005) and may be found at http://link.aip.org/link/?jap/98/043510
Type: Journal/Magazine Article
URI: http://hdl.handle.net/10397/531
ISSN: 00218979
Appears in Collections:ITC Journal/Magazine Articles

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