Effect of Wollaston prism on splitting properties of divergent beam
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Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Institute of Laser Research, Qufu Normal University, Qufu 273165, China
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Corresponding author:
WU Fu-quan, fqwu@mail.qfnu.edu.cn
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Received Date:
2011-01-16
Accepted Date:
2011-02-25
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Abstract
In order to know the effect of a Wollaston prism on o beam and e beam when it is applied to divergent beam, the splitting angles of o light and e light were respectively deduced according to refraction law when both edge rays of the divergent beam incident on a Wollaston prism. The variation of emergent o beam and e beam was analyzed with the method of controlling variables as divergent beam passing through a Wollaston prism, and the effect of a Wollaston prism on the divergent angle of obeam and e beam was obtained. The result show the divergent angle of o beam becomes larger than that of the incident beam and the divergent angle of e beam becomes larger; For a prism with given structure angles, the divergent angle of o beam increases when the wavelength of incident light increases, but the divergent angle of e beam decreases. For a certain monochromatic divergent beam, the divergent angle of o beam increases with the decrease of structure angle, while e beam increased with it. Both of the changes of incident light's wavelength and prism's structure angle have limit effect on the divergent angles of o beam and e beam. The effect of a Wollaston prism on the divergent angles of o beam and e beam can be neglected in the application with lower precision requirements.
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