Applied Physics B

, Volume 106, Issue 3, pp 657–662

Output response in orthogonal directions of a He–Ne laser caused by birefringent-external-cavity feedback

  • P. Zhang
  • S.-L. Zhang
  • Y.-D. Tan
  • Z.-Q. Zhao
  • Z.-L. Zeng
Article

DOI: 10.1007/s00340-011-4860-1

Cite this article as:
Zhang, P., Zhang, SL., Tan, YD. et al. Appl. Phys. B (2012) 106: 657. doi:10.1007/s00340-011-4860-1

Abstract

The output responses of phase, amplitude, and polarization of light intensity of a He–Ne laser with the birefringent external cavity are presented. All phenomena are observed in two orthogonal directions related to the birefringent element’s orientation, and are studied under weak optical feedback. Experiments are carried out in five available detecting positions. It is found that laser intensities are modulated in the two orthogonal directions simultaneously, with a phase difference dominated by the phase retardation of the birefringence element. The modulation amplitudes are different in the two directions. A special polarization phenomenon is also observed and discussed. This research may provide a potential novel measuring principle for transparent birefringent materials.

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • P. Zhang
    • 1
  • S.-L. Zhang
    • 1
  • Y.-D. Tan
    • 1
  • Z.-Q. Zhao
    • 1
  • Z.-L. Zeng
    • 1
  1. 1.State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments and MechanologyTsinghua UniversityBeijingChina

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