【作者】 赵元安； 胡国行； 刘晓凤； 李大伟； 朱美萍； 易葵； 邵建达；

【Author】 Yuan’an Zhao;Guohang Hu;Xiaofeng Liu;Dawei Li;Meiping Zhu;Kui Yi;Jianda Shao;Key Laboratory of Materials for High Power Laser,Shanghai Institute of Optics and Fine Mechanics;

【机构】 中国科学院上海光学精密机械研究所 中科院强激光材料重点实验室；

【摘要】 文章回顾了国内在激光预处理技术研究的进展,研究了激光预处理技术对基频介质膜、KDP/DKDP晶体等光学元件的抗激光损伤性能提升的机理、效果和关键技术。针对高功率激光驱动器中关键光学元件激光负载能力提升,建立了大口径光学元件激光预处理平台并完成基频介质膜元件的激光预处理工艺定型。比较了不同脉冲宽度对DKDP晶体损伤性能的影响规律,确定了DKDP晶体元件的亚纳秒激光预处理方案,并得到实验验证。更多还原

【Abstract】 Research progress of laser conditioning technology and application in China was reviewed in this paper.The physical mechanisms,effects and key techniques of laser conditioning on 1 ω dielectric coatings and KDP/DKDP crystals were studied,and the laser conditioning platform for large-aperture optics was constructed to increase laser damage resistance of critical optics used in high power laser system.The laser conditioning procedure for large-aperture 1 ωdielectric coatings was determined and fixed.The influence of pulse lengths on the effect of laser conditioning for DKDP crystals was demonstrated,and the scheme of sub-nanosecond laser conditioning process was proposed and verified by experimental results.更多还原