中国物理B ›› 2004, Vol. 13 ›› Issue (6): 855-859.doi: 10.1088/1009-1963/13/6/012

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

A birefringent cavity He－Ne laser and optical feedback

刘刚, 张书练, 李岩, 朱钧   

  1. State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
  • 收稿日期:2003-10-17 修回日期:2004-02-13 出版日期:2005-07-05 发布日期:2005-07-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 85103, 68978018, 59275237, 69286001, 69778010, 59775088, 50127501, 60178010).

A birefringent cavity He－Ne laser and optical feedback

Liu Gang (刘刚), Zhang Shu-Lian (张书练), Li Yan (李岩), Zhu Jun (朱钧)   

  1. State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
  • Received:2003-10-17 Revised:2004-02-13 Online:2005-07-05 Published:2005-07-05
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 85103, 68978018, 59275237, 69286001, 69778010, 59775088, 50127501, 60178010).

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摘要： Strong modes competition makes only one of o-light and e-light oscillate in a birefringent dual-frequency laser when the angle between the crystalline axis and the laser beam is nearly zero. When the oscillated mode is in a different part of the gain curve, the detected intensity curves of o-light and e-light are quite different in the existence of optical feedback. The curves are divided into five cases. Three cases of the experimental results can be used for direction discrimination. The polarization characteristics of the birefringent cavity He－Ne laser are also discussed without optical feedback.

Abstract: Strong modes competition makes only one of o-light and e-light oscillate in a birefringent dual-frequency laser when the angle between the crystalline axis and the laser beam is nearly zero. When the oscillated mode is in a different part of the gain curve, the detected intensity curves of o-light and e-light are quite different in the existence of optical feedback. The curves are divided into five cases. Three cases of the experimental results can be used for direction discrimination. The polarization characteristics of the birefringent cavity He－Ne laser are also discussed without optical feedback.

Key words: dual-frequency laser, optical feedback, direction discrimination, birefringent

中图分类号:  (Gas lasers including excimer and metal-vapor lasers)

  • 42.55.Lt
42.60.Da (Resonators, cavities, amplifiers, arrays, and rings) 42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)