High Efficient LD End-pumped QCW 355 nm Laser

LI Yu-yao; WANG Fei; JIAO Zheng-chao; CHE Ying; WANG Xiao-hua

doi:10.3788/fgxb20143503.0332

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High Efficient LD End-pumped QCW 355 nm Laser

更新时间：2020-08-12

- High Efficient LD End-pumped QCW 355 nm Laser
- Chinese Journal of Luminescence Vol. 35, Issue 3, Pages: 332-336(2014)
- 作者机构：
  
  1. 长春理工大学光电工程学院,吉林长春,130022
  2. 长春理工大学理学院,吉林长春,130022
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20143503.0332
  CLC： O436
- Received：23 August 2013，
  
  Revised：04 November 2013，
  
  Published：03 March 2014
- 稿件说明：
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李玉瑶, 王菲, 焦正超等. 高效率LD端面抽运准连续355 nm激光器[J]. 发光学报, 2014,35(3): 332-336

LI Yu-yao, WANG Fei, JIAO Zheng-chao etc. High Efficient LD End-pumped QCW 355 nm Laser[J]. Chinese Journal of Luminescence, 2014,35(3): 332-336
李玉瑶, 王菲, 焦正超等. 高效率LD端面抽运准连续355 nm激光器[J]. 发光学报, 2014,35(3): 332-336 DOI： 10.3788/fgxb20143503.0332.

LI Yu-yao, WANG Fei, JIAO Zheng-chao etc. High Efficient LD End-pumped QCW 355 nm Laser[J]. Chinese Journal of Luminescence, 2014,35(3): 332-336 DOI： 10.3788/fgxb20143503.0332.

摘要

报道了一台激光二极管（LD）端面抽运Nd：YVO

晶体腔内倍频和腔外和频相结合的声光调Q准连续355 nm 紫外激光器。采用LD端面抽运双侧翼键合YVO

基质的Nd：YVO

晶体，在腔内置入Ⅰ类相位匹配的LiB

（LBO）晶体进行倍频实现1 064 nm和532 nm双波长准连续激光输出，通过消色差透镜将双波长激光聚焦耦合到Ⅱ类相位匹配的LBO 晶体中进行和频，并采用双向和频光路，获得了高效率、高光束质量、高重复频率的准连续355 nm 紫外激光输出。在抽运功率为28.6 W、重复频率为20 kHz时，355 nm激光最大输出功率4.2 W，脉宽为20.6 ns，光-光转换效率为14.7%，激光器光束质量因子

和

分别为1.29和1.23。

Abstract

A laser diode (LD) end pumped acousto-optic Q-switched Nd:YVO

solid state 355 nm ultraviolet laser is reported by using intra-cavity double frequency and extra-cavity sum frequency technique. Nd:YVO

crystal bonded by YVO

in its both sides is end-pumped by LD

and typeⅠphase matched LiB

(LBO) as the second harmonic generation crystal is placed in the cavity. 1 064 nm and 532 nm dual wavelength output from the cavity are coupled into the typeⅡ phase matched LBO crystal through an achromatic lens. High efficiency

good beam quality and high repetition rate 355 nm ultraviolet laser is obtained by sum frequency mixing back and forth. The 4.2 W 355 nm laser is obtained at the pump power of 28.6 W and the repetition frequency of 20 kHz

with the pulse width as short as 20.6 ns. The optical to optical conversion efficiency is about 14.7%. The beam quality factor

and

of 355 nm ultraviolet laser are 1.29 and 1.23

respectively.

关键词

Keywords

references

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