激光技术2013，Vol.37Issue(1)：72-76,5.DOI:10.7510/jgjs.issn.1001-3806.2013.01.018
聚焦激光在KDP晶体中的传输特性模拟
Simulation of transmission characteristics of focused laser inside KDP crystal
摘要
Abstract
Laser producing 3-D microstructures inside KDP crystals is an effective way to suppress the transverse stimulated Raman scattering(TSRS) effect in high power lasers. The transmission characteristics of focused laser inside KDP crystal was simulated to investigate the feasibility of laser making 3-D microstructures and the effects of laser parameters on the machining accuracy, efficiency and success rates. The effects of the focus peak power density, spot distortion and the migration are the main factors affecting the machining accuracy and causing crystal fragmentation. The size and shape of the e-polarization focus will distort and its peak power density decreases rapidly with the increasing of angle between incident laser and crystal optical axis. The results show that the effect of the e-polarization laser will increase the processing efficiency more than twice when the angle is less than 15° and can be neglected in the low-energy or cause crystal fragmentation easily in high-energy when the angle is greater than 30°.关键词
激光技术/传输特性/数值模拟/KDP晶体Key words
laser technique/transmission characteristics/numerical simulation/KDP crystal分类
信息技术与安全科学引用本文复制引用
邓磊敏,段军,杨焕,杜敏..聚焦激光在KDP晶体中的传输特性模拟[J].激光技术,2013,37(1):72-76,5.基金项目
国家自然科学基金资助项目(51175205) （51175205）
华中科技大学自主创新研究基金资助项目(2011TS057) （2011TS057）
