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Chinese Physics, 2007, Vol. 16(12): 3710-3718    DOI: 10.1088/1009-1963/16/12/026
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

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)
Center for Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China
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.
Keywords:  laser      composite four-mirror cavity      power addition      effective combined gain  
Accepted manuscript online: 
PACS:  42.55.Rz (Doped-insulator lasers and other solid state lasers)  
  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)  

Cite this article: 

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) Intracavity power addition with a close-ended composite four-mirror cavity 2007 Chinese Physics 16 3710

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