Chin. Phys. B ›› 2013, Vol. 22 ›› Issue (12): 124205-124205.doi: 10.1088/1674-1056/22/12/124205

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

A sensitive method of determining optic axis azimuth based on laser feedback

吴云, 张鹏, 陈文学, 谈宜东   

  1. The State Key Lab of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
  • 收稿日期:2013-02-22 修回日期:2013-07-04 出版日期:2013-10-25 发布日期:2013-10-25
  • 基金资助:
    Project supported by the Natural Science Foundation of Beijing, China (Grant No. 3091002).

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)   

  1. The State Key Lab of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
  • Received:2013-02-22 Revised:2013-07-04 Online:2013-10-25 Published:2013-10-25
  • Contact: Tan Yi-Dong E-mail:Tanyd@tsinghua.edu.cn
  • Supported by:
    Project supported by the Natural Science Foundation of Beijing, China (Grant No. 3091002).

摘要: 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.

关键词: laser feedback, optic axis, differential method, phase difference

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.

Key words: laser feedback, optic axis, differential method, phase difference

中图分类号:  (Metrological applications; optical frequency synthesizers for precision spectroscopy)

  • 42.62.Eh
42.62.-b (Laser applications) 78.20.Fm (Birefringence)