中国物理B ›› 2010, Vol. 19 ›› Issue (3): 34203-034203.doi: 10.1088/1674-1056/19/3/034203

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Distortion of optical feedback signals in microchip Nd:YAG lasers subjected to external multi-beam interference feedback

谈宜东, 张书练, 任舟, 任成, 张亦男   

  1. The State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
  • 收稿日期:2008-11-06 修回日期:2009-06-03 出版日期:2010-03-15 发布日期:2010-03-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No.~50805084) and China Postdoctoral Science Foundation (Grant Nos.~20080430395 and 200902087).

Distortion of optical feedback signals in microchip Nd:YAG lasers subjected to external multi-beam interference feedback

Tan Yi-Dong(谈宜东), Zhang Shu-Lian(张书练), Ren Zhou(任舟), Ren Cheng (任成), and Zhang Yi-Nan(张亦男)   

  1. The State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
  • Received:2008-11-06 Revised:2009-06-03 Online:2010-03-15 Published:2010-03-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No.~50805084) and China Postdoctoral Science Foundation (Grant Nos.~20080430395 and 200902087).

摘要: This paper proposes a theoretical analysis for the characteristics of an external cavity Nd:YAG laser with feedback of multiple-beam interference, which is induced by the multi-reentrance of the light from the external Fabry--Perot cavity. The theoretical model considers the multiple beam interference of the external Fabry--Perot cavity. It is found that the optical feedback signals are distorted to pulse waveforms instead of the sinusoidal ones in conventional feedback. The experimental results are in good agreement with the theoretical analysis. The obtained theoretical and experimental results can advance the development of a laser feedback interferometer.

Abstract: This paper proposes a theoretical analysis for the characteristics of an external cavity Nd:YAG laser with feedback of multiple-beam interference, which is induced by the multi-reentrance of the light from the external Fabry--Perot cavity. The theoretical model considers the multiple beam interference of the external Fabry--Perot cavity. It is found that the optical feedback signals are distorted to pulse waveforms instead of the sinusoidal ones in conventional feedback. The experimental results are in good agreement with the theoretical analysis. The obtained theoretical and experimental results can advance the development of a laser feedback interferometer.

Key words: optical feedback, multi-beam interference

中图分类号:  (Doped-insulator lasers and other solid state lasers)

  • 42.55.Rz
42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation) 42.60.Da (Resonators, cavities, amplifiers, arrays, and rings) 07.60.Ly (Interferometers)