808 nm kW-output high-efficiency diode laser sources

SHAN Xiao-nan; LIU Yun; CAO Jun-sheng

doi:10.3788/OPE.20111902.0452

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808 nm kW-output high-efficiency diode laser sources

Article | 更新时间：2020-08-12

- 808 nm kW-output high-efficiency diode laser sources
- Optics and Precision Engineering Vol. 19, Issue 2, Pages: 452-456(2011)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20111902.0452
  CLC： TN248.4
- Received：08 October 2010，
  
  Revised：30 October 2010，
  
  Published Online：22 February 2011，
  
  Published：22 February 2011
- 稿件说明：
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单肖楠, 刘云, 曹军胜. 808nm千瓦级高效大功率半导体激光光源[J]. 光学精密工程, 2011,19(2): 452-456

SHAN Xiao-nan, LIU Yun, CAO Jun-sheng. 808 nm kW-output high-efficiency diode laser sources[J]. Editorial Office of Optics and Precision Engineering, 2011,19(2): 452-456
单肖楠, 刘云, 曹军胜. 808nm千瓦级高效大功率半导体激光光源[J]. 光学精密工程, 2011,19(2): 452-456 DOI： 10.3788/OPE.20111902.0452.

SHAN Xiao-nan, LIU Yun, CAO Jun-sheng. 808 nm kW-output high-efficiency diode laser sources[J]. Editorial Office of Optics and Precision Engineering, 2011,19(2): 452-456 DOI： 10.3788/OPE.20111902.0452.

摘要

提出了一种新型光束整形技术

该技术通过平行平板玻璃堆实现光束的分割、平移、重排

从而改善半导体激光的光束质量。该试验采用自主设计的中心波长为808 nm

连续输出功率为60 W/bar

填充因子为30%

具有19个发光点

每个发光点尺寸为1 m135 m的20层半导体激光叠阵

通过望远镜系统对慢轴方向进行扩束后用一个聚焦镜同时对快慢轴聚焦

最终在焦平面上得到了1 kW输出

且聚焦光斑达到1 mm1 mm

耦合效率达到90%

基本满足激光熔覆和激光焊接的要求。

Abstract

A kind of beam shaping technique was presented to improve the beam quality of a semiconductor laser and to achieve the beam splitting

translating

and rearranging by a parallel plate glass stack.The experiment uses a 20-layer 808 nm semiconductor laser array designed by ourselves with the output power of 60 W per bar

19 light-emitting points of 1 m135 m each and 30% filling factor to expand beam at a slow axis through a telescope system

and also uses a focusing lens to focus on both the slow axis and the fast one at the same time. Experiments show that the technique can achieve the 1 kW output power on the focal plane

focused spot of 1 mm1 mm and coupling efficiency of 90%

which basically satisfies the needs of laser cladding and welding.

关键词

Keywords

references

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