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

doi:10.1088/1674-1056/18/6/035

Abstract

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

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