Extinction ratios of reverse Rochon prisms

MA Lili; WU Fuquan; SONG Lianke; SU Fufang; SHI Meng

doi:10.7510/jgjs.issn.1001-3806.2017.04.031

LASER TECHNOLOGY > 2017 > 41(4): 611-613. > DOI: 10.7510/jgjs.issn.1001-3806.2017.04.031

MA Lili, WU Fuquan, SONG Lianke, SU Fufang, SHI Meng. Extinction ratios of reverse Rochon prisms[J]. LASER TECHNOLOGY, 2017, 41(4): 611-613. DOI: 10.7510/jgjs.issn.1001-3806.2017.04.031

Citation:

MA Lili, WU Fuquan, SONG Lianke, SU Fufang, SHI Meng. Extinction ratios of reverse Rochon prisms[J]. LASER TECHNOLOGY, 2017, 41(4): 611-613. DOI: 10.7510/jgjs.issn.1001-3806.2017.04.031

Citation:

MA Lili, WU Fuquan, SONG Lianke, SU Fufang, SHI Meng. Extinction ratios of reverse Rochon prisms[J]. LASER TECHNOLOGY, 2017, 41(4): 611-613. DOI: 10.7510/jgjs.issn.1001-3806.2017.04.031

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Extinction ratios of reverse Rochon prisms

Institute of Laser, Qufu Normal University, Qufu 273165, China

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Received Date: July 10, 2016
Revised Date: September 26, 2016
Published Date: July 24, 2017

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Abstract

In order to study the extinction ratio of a reverse Rochon prism, extinction ratios of forward direction and reverse direction of a Rochon prism were studied by analyzing photoelastic effect in the prism cement. The reason for the declining of extinction ratio when parallel laser beam passing a Rochon prism backward was studied both in theory and by experiment. The result shows that the extinction ratio is 1.14×10^-5 when parallel laser beam passes through a Rochon prism forward, and extinction ratio is 2.93×10^-3 when beam passes through the prism backward. Extinction ratio is 5.72×10^-5 when beam backward with a λ/4 wave plate. When collimation beam passes through a Rochon prism backward, the extinction ratio of the beam whose propagation direction does not change is decreased because of photoelastic effect in the cementing layer. The experiment verifies the correctness of the theory. The research can provide necessary reference for the designing and the correct using of Rochon prisms.
- physical optics,
- polarization optics,
- Rochon prism,
- extinction ratio,
- photoelastic effect

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