Abbreviated Journal Title
J. Appl. Phys.
Keywords
LIGHT MODULATORS; ANISOTROPIC GELS; SCATTERING; GRATINGS; Physics, Applied
Abstract
A normal-mode liquid-crystal (LC) gel for phase-only modulation is demonstrated. In the absence of an electric field, the gel has negligible light scattering. Upon application of an electric field, the gel becomes highly transparent and exhibits phase modulation capability. For a 20-mu m transmissive E48 LC gel, the phase shift reaches 0.55 pi at lambda=633 nm and the response time is similar to 2 ms. Although the phase change is not very large, it is sufficient for making adaptive microphotonic devices. Such a normal-mode LC gel-based phase modulator is free from scattering and hysteresis and has a fast response time and good long-term operation stability.
Journal Title
Journal of Applied Physics
Volume
98
Issue/Number
2
Publication Date
1-1-2005
Document Type
Article
DOI Link
Language
English
First Page
4
WOS Identifier
ISSN
0021-8979
Recommended Citation
Ren, Hongwen; Wu, Janet R.; and Wu, Shin-Tson, "Phase-only modulation using a normal-mode liquid-crystal gel" (2005). Faculty Bibliography 2000s. 5587.
https://stars.library.ucf.edu/facultybib2000/5587
Comments
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