• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Thin-Film Coatings for Optical Applications >Vapor-phase-deposited organosilane coatings as 'hardening' agents for high-peak-power laser optics
【24h】

Vapor-phase-deposited organosilane coatings as 'hardening' agents for high-peak-power laser optics

机译：蒸汽相沉积的有机硅烷涂层作为高峰功率激光光学器件的“硬化”代理

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Multilayer-dielectric (MLD) diffraction gratings are used in high-power laser systems to compress laser-energy pulses. The peak power deliverable on target for these short-pulse petawatt class systems is limited by the laser-damage resistance of the optical components in the system, especially the MLD gratings. Recent experiments in our laboratory have shown that vapor treatment of MLD gratings at room temperature with organosilanes such as hexamethyldisilazane (HMDS) produces an increase in their damage threshold at 1054 nm (10-ps, 370-μm spot size) as compared to uncoated MLD grating control samples. The 1-on-1 laser-damage threshold of an HMDS-treated grating increased by 4.5% as compared to the uncoated control sample, while the N-on-1 damage threshold of an MLD grating treated with tetramethyldisilazane increased by 16.5%. For an MLD grating treated with bis-(trifluoropropyl)tetramethyldisilazane, the N-on-1 and 1-on-1 damage thresholds increased by 4.8% and 5.3%, respectively. Such increases in laser-damage threshold are unprecedented and counterintuitive because it is widely believed that the presence of organic materials or coatings on the surfaces of optical substrates will inevitably lead to reduced laser-damage resistance.
机译：多层电介质（MLD）衍射光栅用于高功率激光系统以压缩激光能量脉冲。这些短脉冲PETAWATT类系统的目标上的峰值功率可由系统中光学组件的激光损伤电阻限制，尤其是MLD光栅。我们实验室的最新实验表明，与未经涂覆的MLD相比，室温下的MLD光栅与有机硅烷（HMDS）的有机硅烷的蒸汽处理产生损伤阈值的增加，相比，与未涂覆的MLD相比，在1054nm（10-PS，370微米尺寸）中产生损伤阈值的增加光栅对照样品。与未涂覆的对照样品相比，HMDS处理的光栅的1-ON-1激光损伤阈值增加了4.5％，而用四甲基二硅氮烷处理的MLD光栅的N-11次损伤阈值增加了16.5％。对于用双甲基二硅氮氮烷处理的MLD光栅，N-ON-1和1-ON-1损伤阈值分别增加了4.8％和5.3％。激光损伤阈值的增加是前所未有的和逆行的，因为它被广泛认为光学基板表面上的有机材料或涂层的存在将不可避免地导致激光损伤阻力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号