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Chin. Phys. B, 2009, Vol. 18(6): 2324-2327    DOI: 10.1088/1674-1056/18/6/035
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

Influence of laser linewidth on external-cavity frequency doubling efficiency of a 1.56μm master oscillator fiber power amplifier

Tian Xiu-Tao(田秀桃), Li Yong-Min(李永民), Liu Qin(刘勤), and Zhang Kuan-Shou(张宽收)
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China
Abstract  By using an external-cavity frequency-doubling master oscillator fiber power amplifier (MOPA), a 700 mW continuous-wave single-frequency laser source at 780 nm is produced. It is shown that the frequency doubling efficiency is improved when the seed diode laser is optically locked to a resonant frequency of a confocal Fabry--Perot (F-P) cavity. This phenomenon can be attributed to the narrowing of the 1.56 μm laser linewidth and explained by our presented theoretical model. The experimental results are found to be in good agreement with the theoretical predictions.
Keywords:  laser linewidth      external-cavity frequency doubling      conversion efficiency  
Received:  28 October 2008      Revised:  13 November 2008      Accepted manuscript online: 
PACS:  42.55.Wd (Fiber lasers)  
  42.60.Da (Resonators, cavities, amplifiers, arrays, and rings)  
  42.60.Fc (Modulation, tuning, and mode locking)  
  42.60.Lh (Efficiency, stability, gain, and other operational parameters)  
  42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation)  
  42.65.Yj (Optical parametric oscillators and amplifiers)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos 60527003, 60608011 and 60878003), and the State Key Program for Basic Research of China (Grant No 2007CB316501).

Cite this article: 

Tian Xiu-Tao(田秀桃), Li Yong-Min(李永民), Liu Qin(刘勤), and Zhang Kuan-Shou(张宽收) Influence of laser linewidth on external-cavity frequency doubling efficiency of a 1.56μm master oscillator fiber power amplifier 2009 Chin. Phys. B 18 2324

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