中国物理B ›› 2008, Vol. 17 ›› Issue (2): 644-648.doi: 10.1088/1674-1056/17/2/047

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Intensity modulation characters of orthogonally polarized HeNe lasers with different optical feedback level

崔 柳, 张书练, 万新军   

  1. The State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
  • 收稿日期:2007-02-01 修回日期:2007-05-04 出版日期:2008-02-20 发布日期:2008-02-20
  • 基金资助:
    Project supported by the State Key Program of National Natural Science of China (Grant No 60438010).

Intensity modulation characters of orthogonally polarized HeNe lasers with different optical feedback level

Cui Liu(崔柳)†, Zhang Shu-Lian(张书练), and Wan Xin-Jun(万新军)   

  1. The State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
  • Received:2007-02-01 Revised:2007-05-04 Online:2008-02-20 Published:2008-02-20
  • Supported by:
    Project supported by the State Key Program of National Natural Science of China (Grant No 60438010).

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摘要： This paper demonstrates the intensity modulation characters of orthogonally polarized HeNe lasers with different optical feedback level generated by the variable reflectivity of external reflector. The modulation depths of the orthogonally polarized frequencies are increased when the optical feedback level becomes strong. It also observes that the modulation amplitudes are different for different external cavity length. Based on the vectorial extension of Lamb's semi-classical theory, it finds that the calculations are consistent with the experimental results.

Abstract: This paper demonstrates the intensity modulation characters of orthogonally polarized HeNe lasers with different optical feedback level generated by the variable reflectivity of external reflector. The modulation depths of the orthogonally polarized frequencies are increased when the optical feedback level becomes strong. It also observes that the modulation amplitudes are different for different external cavity length. Based on the vectorial extension of Lamb's semi-classical theory, it finds that the calculations are consistent with the experimental results.

Key words: intensity modulation, optical feedback, frequency split

中图分类号:  (Modulation, tuning, and mode locking)

  • 42.60.Fc
42.60.Da (Resonators, cavities, amplifiers, arrays, and rings) 42.55.Lt (Gas lasers including excimer and metal-vapor lasers)