Compact, efficient diode-end-pumped Nd:GdVO4 slab continuous-wave 912-nm laser

doi:10.1088/1674-1056/21/2/024207

Abstract A fiber-coupled laser-diode (LD) end-pumped Nd:GdVO₄ slab continuous-wave (CW) 912-nm laser and an LD bar end-pumped Nd:GdVO₄ slab CW 912-nm laser are both demonstrated in this paper. Using the fiber-coupled LD of end-pumped type, a highest CW 912-nm laser output power of 10.17 W is obtained with a high optical-to-optical conversion efficiency of 24.6% and a slope efficiency of 34.5%. The measured M² factors of beam quality in x and y directions are 5.3 and 5.1, respectively. Besides, an LD bar of end-pumped type is used to realize CW 912-nm laser output, which has the advantages of compactness and low cost. When the pump power is 38.8 W, the output power is 8.87 W and the measured M² factors of beam quality in x and y directions are 16 and 1.31, respectively. In order to improve the beam quality of the 912-nm laser at x direction, a new quasi-concentric laser resonator will be designed, and an LD bar end-pumped Nd:GdVO₄ slab high-power CW 912-nm TEM₀₀ laser will be realized in the future.

Keywords: diode-end-pumped Nd:GdVO₄ slab LD bar 912-nm laser

Received: 27 May 2011
Revised: 26 August 2011
Accepted manuscript online:

PACS:	42.55.Xi	(Diode-pumped lasers)
	42.60.Da	(Resonators, cavities, amplifiers, arrays, and rings)
	42.60.Lh	(Efficiency, stability, gain, and other operational parameters)
	42.60.Pk	(Continuous operation)

Corresponding Authors: Liu Huan,lh@mail.tsinghua.edu.cn
E-mail: lh@mail.tsinghua.edu.cn

Cite this article:

Liu Huan(刘欢) and Gong Ma-Li(巩马理) Compact, efficient diode-end-pumped Nd:GdVO₄ slab continuous-wave 912-nm laser 2012 Chin. Phys. B 21 024207

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Compact, efficient diode-end-pumped Nd:GdVO4 slab continuous-wave 912-nm laser

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Compact, efficient diode-end-pumped Nd:GdVO₄ slab continuous-wave 912-nm laser