ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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A sensitive method of determining optic axis azimuth based on laser feedback |
Wu Yun (吴云), Zhang Peng (张鹏), Chen Wen-Xue (陈文学), Tan Yi-Dong (谈宜东) |
The State Key Lab of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University, Beijing 100084, China |
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Abstract A sensitive method to determine the optic axis azimuth of the birefringence element is presented, which is based on laser feedback. The phase difference between the two intensities in birefringence feedback changes with the angle between the optic axis of the birefringence element and laser original polarization. The phase difference is highly sensitive to the relative position of the optic axis and the laser original polarization. This method is used to highly precisely determine the optic axis azimuth, and is able to distinguish between the fast axis and the slow axis of the birefringence element. Theoretical analysis and experimental results are both demonstrated.
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Received: 22 February 2013
Revised: 04 July 2013
Accepted manuscript online:
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PACS:
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42.62.Eh
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(Metrological applications; optical frequency synthesizers for precision spectroscopy)
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42.62.-b
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(Laser applications)
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78.20.Fm
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(Birefringence)
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Fund: Project supported by the Natural Science Foundation of Beijing, China (Grant No. 3091002). |
Corresponding Authors:
Tan Yi-Dong
E-mail: Tanyd@tsinghua.edu.cn
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Cite this article:
Wu Yun (吴云), Zhang Peng (张鹏), Chen Wen-Xue (陈文学), Tan Yi-Dong (谈宜东) A sensitive method of determining optic axis azimuth based on laser feedback 2013 Chin. Phys. B 22 124205
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