Optimized design of 1/2 retardation sheet for measurement of airborne lidar polarization channels gain ratio

liu hou-tong; chi ru-li; hu shun-xing; zhou jun

Volume 20 Issue 05

May 2008

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Article Navigation > High Power Laser and Particle Beams > 2008 > 20(05): 0-

sun zhihong, xia yanwen, liu hua, et al. Contrast ratio measurement of single shot picosecond pulse using third-order noncollinear autocorrelation technique[J]. High Power Laser and Particle Beams, 2010, 22.

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liu hou-tong, chi ru-li, hu shun-xing, et al. Optimized design of 1/2 retardation sheet for measurement of airborne lidar polarization channels gain ratio[J]. High Power Laser and Particle Beams, 2008, 20.

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Optimized design of 1/2 retardation sheet for measurement of airborne lidar polarization channels gain ratio

1.
Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,P.O.Box 1125,Hefei 230031,China;
2.
Aumobile Management College of People’s Liberation Army,Bengbu 233000,China

Publish Date: 2008-05-15

Abstract

Abstract

The relation between ratio of parallel and perpendicular polarization components of the airborne lidar’s polarized backscatted signals and crystal thickness are analyzed quantitatively using plane parallel plate pattern and crystal membranous theory when the polarized lights permeate 1/2 retardation sheet. Optimal processing thickness and appropriate processing thickness ranges of 1/2 quartz retardation sheet and 1/2 calcite retardation sheet for measurement of airborne lidar polarization gain ratio values are analyzed quantitatively and discussed. At the same time, unfitted processing thickness ranges are pointed out. There are some differences between gain ratios measured respectively when the polarized direction of return signal is parallel or perpendicular with the optical axis of
- airborne lidar,
- 1/2 retardation sheet,
- ratio of gain,
- birefringent crystal

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