高稳定度大能量三波长脉冲激光系统研究

发布时间：2018-03-31 20:13

  本文选题：激光技术　切入点：稳定度　出处：《量子电子学报》2017年04期

【摘要】：设计了一套高稳定度大能量输出的三波长Nd:YAG激光系统,用作激光清洗光源。该系统包括振荡级、放大级及后续波长切换系统。为解决激光棒热致双折射效应造成的输出能量下降和输出不稳定,在输出镜和激光工作物质之间插入λ_(1/4)波片,并对波片的补偿效果进行了研究。结果表明:插入波片后振荡级输出能量提高了10%,稳定度明显提高。重复频率为10 Hz时,1064 nm激光经放大后单脉冲能量可达700 mJ,其单次通过倍频晶体BBO,得到532 nm激光的单脉冲能量为325.6 mJ,四倍频后得到266 nm激光的单脉冲能量为84 mJ。1 h内测得的三波长激光输出能量不稳定度均小于0.6%。
[Abstract]:A three wavelength Nd:YAG laser system with high stability and high energy output is designed, which can be used as laser cleaning light source.The system includes an oscillating stage, an amplifier stage and a subsequent wavelength switching system.In order to solve the problem of output energy decrease and output instability caused by thermal birefringence of laser rod, a 1 / 4) wave plate is inserted between the output mirror and the laser working material, and the compensation effect of the wave plate is studied.The results show that the output energy of the oscillating stage is increased by 10% and the stability is obviously improved.When the repetition rate is 10 Hz, the single pulse energy of 1064nm laser can reach 700mJ after amplification. The single pulse energy of 532nm laser is 325.6 MJ, and that of 266nm laser is 84 mJ.1 h.The instability of three wavelength laser output energy is less than 0.6.
【作者单位】： 中国科学院安徽光学精密机械研究所安徽光子器件与材料省级实验室;中国科学院大学;中国科学技术大学;合肥师范学院;
【分类号】：TN249
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本文编号：1692276