Semi-circumferential LD arrays symmetrically-pumped solid-state lasers

GUO Yun-xiao; GONG Ma-li; XUE Hai-zhong; ZHAI Gang; LI Chen; YAN Ping; LIU Qiang; CHEN Gang

LASER TECHNOLOGY > 2007 > 31(1): 1-3,88.

GUO Yun-xiao, GONG Ma-li, XUE Hai-zhong, ZHAI Gang, LI Chen, YAN Ping, LIU Qiang, CHEN Gang. Semi-circumferential LD arrays symmetrically-pumped solid-state lasers[J]. LASER TECHNOLOGY, 2007, 31(1): 1-3,88.

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Semi-circumferential LD arrays symmetrically-pumped solid-state lasers

1.
Center for Photonics and Electronics, Department of Precision Instruments, Tsinghua University, Beijing 100084, China;
2.
School of Technical Physics, Xidian University, Xi'an 710071, China;
3.
Southwest Institute of Technical Physics, Chengdu 610041, China

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Received Date: December 15, 2005
Revised Date: January 08, 2006
Published Date: February 24, 2007

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Abstract

To reduce the asymmetry of the output laser beam caused by the geometry of the conduct-cooled laser crystal in side pumped solid-state lasers,two pump modules were symmetrically placed and a semi-circumferentially mounted LD arrays were taken in each pump module.Numerical calculation and experiment were made,a maximum output power of 63.6mJ was gotten with 276mJ pump power at a frequency of 20Hz,the slope efficiency was 34%.Both numerical and experimental results prove the symmetrical geometry can effectively improve the beam quality and approximate symmetrical laser distribution can be obtained.
- lasers,
- side pump,
- laser crystal,
- symmetrical,
- LD

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