High Beam Quality Water-free Pulsed Nd: YAG Laser with Output Energy 1 J

LIU Xue-sheng; YANG Song; SI Han-ying; ZOU Ji-yue; YAN An-ru; WANG Cong-cong; LIU You-qian

doi:10.3788/fgxb20194012.1523

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High Beam Quality Water-free Pulsed Nd: YAG Laser with Output Energy 1 J

Device Fabrication and Physics | 更新时间：2020-08-12

- High Beam Quality Water-free Pulsed Nd: YAG Laser with Output Energy 1 J
- Chinese Journal of Luminescence Vol. 40, Issue 12, Pages: 1523-1530(2019)
- 作者机构：
  
  1. 北京工业大学激光工程研究院, 北京 100124
  2. 北京市激光应用技术工程技术研究中心, 北京 100124
  3. 跨尺度激光成型制造技术教育部重点实验室, 北京 100124
  4. 光电信息控制和安全技术重点实验室, 天津 300308
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20194012.1523
  CLC： TN248.1
- Received：05 July 2019，
  
  Revised：11 August 2019，
  
  Published Online：05 December 2019，
  
  Published：05 December 2019
- 稿件说明：
移动端阅览
刘学胜, 杨松, 司汉英等. 1J高光束质量免水冷脉冲Nd:YAG激光器[J]. 发光学报, 2019,40(12): 1523-1530

LIU Xue-sheng, YANG Song, SI Han-ying etc. High Beam Quality Water-free Pulsed Nd: YAG Laser with Output Energy 1 J[J]. Chinese Journal of Luminescence, 2019,40(12): 1523-1530
刘学胜, 杨松, 司汉英等. 1J高光束质量免水冷脉冲Nd:YAG激光器[J]. 发光学报, 2019,40(12): 1523-1530 DOI： 10.3788/fgxb20194012.1523.

LIU Xue-sheng, YANG Song, SI Han-ying etc. High Beam Quality Water-free Pulsed Nd: YAG Laser with Output Energy 1 J[J]. Chinese Journal of Luminescence, 2019,40(12): 1523-1530 DOI： 10.3788/fgxb20194012.1523.

摘要

研制了一种TEC制冷LD侧泵高能量、高光束质量、电光调

全固态Nd:YAG激光器。在主振荡器中晶体棒的尺寸为

7 mm100 mm，Nd原子数比例为1.1%，LD泵浦的最大峰值功率为15 kW，在重复频率为10 Hz时，获得了350 mJ输出能量，脉冲宽度为9.7 ns，光束质量因子

在水平和垂直方向分别为3.3和3.8。使用主振荡功率放大结构，提高了最终的输出功率。第一级放大器Nd:YAG晶体棒尺寸为

7.5 mm134 mm，在输出重复频率10 Hz、泵浦电流80 A、泵浦脉冲宽度200 s时，得到最大单脉冲能量700 mJ，脉冲宽度10 ns。第二级放大器Nd:YAG晶体棒尺寸为

8 mm100 mm，泵浦电流为80 A。最终我们获得了最大的单脉冲能量1 085 mJ，脉冲宽度10 ns，能量不稳定度小于3%，测量的光束质量因子

在水平和垂直方向分别为3.9和4.8，实现了焦耳级高光束质量Nd:YAG激光器的小型化、无水冷化。

Abstract

A LD side-pumped high-energy

high-beam-quality

electro-optic

-switched all-solid-state Nd:YAG laser with thermoelectric cooler is developed. The size of the crystal in the oscillator is

7 mm100 mm and the Nd atomic ratio is 1.1%. The maximum peak power of pumping LDs is 15 kW. At the repetition rate of 10 Hz

the oscillation output with the maximum pulse energy of 350 mJ is obtained with the pulse width of 9.7 ns

the beam quality

of horizontal and vertical directions is 3.3 and 3.8

respectively. The MOPA structure is used to improve the final output power. The dimension of the Nd:YAG crystal in the first amplifier is

7.5 mm134 mm

when the pumping current is 80 A and the width of pumping pulse is 200 s. A 700 mJ

10 ns laser pulse is obtained with the repetition frequency 10 Hz. The dimension of the Nd:YAG crystal in the second amplifier is

8 mm100 mm and the pumping current is 80 A. The maximum output pulse energy is up to 1 085 mJ with the pulse width of 10 ns. The energy instability is less than 3%

the beam quality

of the horizontal and vertical directions is 3.9 and 4.8

respectively. The miniaturization and water-free of high beam quality Nd:YAG laser at Joule level are realized.

关键词

Keywords

references

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