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

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

中国物理B ›› 2012, Vol. 21 ›› Issue (2): 24207-024207.doi: 10.1088/1674-1056/21/2/024207

刘欢,巩马理

收稿日期:2011-05-27 修回日期:2011-08-26 出版日期:2012-01-30 发布日期:2012-01-30
通讯作者: 刘欢,lh@mail.tsinghua.edu.cn E-mail:lh@mail.tsinghua.edu.cn

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

Liu Huan(刘欢)^† and Gong Ma-Li(巩马理)

State Key Laboratory of Tribology, Center for Photonics and Electronics, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China

Received:2011-05-27 Revised:2011-08-26 Online:2012-01-30 Published:2012-01-30
Contact: Liu Huan,lh@mail.tsinghua.edu.cn E-mail:lh@mail.tsinghua.edu.cn

摘要/Abstract

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.

Key words: diode-end-pumped, Nd:GdVO₄ slab, LD bar, 912-nm laser

中图分类号: (Diode-pumped lasers)

42.55.Xi

42.60.Da (Resonators, cavities, amplifiers, arrays, and rings) 42.60.Lh (Efficiency, stability, gain, and other operational parameters) 42.60.Pk (Continuous operation)

刘欢,巩马理. [J]. 中国物理B, 2012, 21(2): 24207-024207.

Liu Huan(刘欢) and Gong Ma-Li(巩马理) . Compact, efficient diode-end-pumped Nd:GdVO₄ slab continuous-wave 912-nm laser[J]. Chin. Phys. B, 2012, 21(2): 24207-024207.

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

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