中国物理B ›› 2007, Vol. 16 ›› Issue (12): 3710-3718.doi: 10.1088/1009-1963/16/12/026

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Intracavity power addition with a close-ended composite four-mirror cavity

雷 鸣, 巩马理, 柳 强, 张海涛, 王云祥   

  1. Center for Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China
  • 出版日期:2007-12-20 发布日期:2007-12-20

Intracavity power addition with a close-ended composite four-mirror cavity

Lei Ming(雷鸣), Gong Ma-Li(巩马理), Liu Qiang(柳强), Zhang Hai-Tao(张海涛), and Wang Yun-Xiang(王云祥)   

  1. Center for Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China
  • Online:2007-12-20 Published:2007-12-20

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摘要： We present a novel four-mirror cavity with two active gains to combine power intracavity and also give a detailed theoretical analysis of the combined gain. By using the effective field method, the four-mirror cavity with two gain media can be regarded as a linear resonator with one effective combined gain (ECG), and we procure a theoretical model of the ECG and deduce its exact analytical expression. When the two branch gains are close to each other, the combined gain can be reduced to their product, and the simplified presentation of ECG has been demonstrated. The combined output power which directly reflects the small signal ECG of the four-mirror cavity is studied experimentally, and the results are in good agreement with the theoretical ones.

Abstract: We present a novel four-mirror cavity with two active gains to combine power intracavity and also give a detailed theoretical analysis of the combined gain. By using the effective field method, the four-mirror cavity with two gain media can be regarded as a linear resonator with one effective combined gain (ECG), and we procure a theoretical model of the ECG and deduce its exact analytical expression. When the two branch gains are close to each other, the combined gain can be reduced to their product, and the simplified presentation of ECG has been demonstrated. The combined output power which directly reflects the small signal ECG of the four-mirror cavity is studied experimentally, and the results are in good agreement with the theoretical ones.

Key words: laser, composite four-mirror cavity, power addition, effective combined gain

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

  • 42.55.Rz
42.60.Da (Resonators, cavities, amplifiers, arrays, and rings) 42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation) 42.60.Lh (Efficiency, stability, gain, and other operational parameters) 42.79.Bh (Lenses, prisms and mirrors)