摘要
为了满足自适应光学中激光导星系统的要求,根据薄膜理论,选择合适的薄膜材料,采用针式优化算法并建立与膜内电场强度相关的膜系评价函数,优化出满足要求且电场强度分布较低的膜系。通过电子束加热蒸发和离子源辅助沉积制备薄膜。制备的偏振分光膜满足偏振耦合分光系统的使用要求,通过了环境测试并具有较高的激光损伤阈值。
In order to meet the requirements of adaptive optics laser guide star system, the appropriate film material is selected base on film theory. The film system＇s evaluation funciton which is associated with the electric field is established by using needle optimization algorithm. The film is optimized to meet the requirements and has a lower electric field intensity distribution. Electron beam heating evaporation and ion-assisted deposition system are adopted for film preparation. The polarizing beam splitter meets the requirements of polarization coupling splitting system, and passes the environmental testing, which has a high laser damage threshold.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2014年第1期304-308,共5页
Acta Optica Sinica
基金
国家自然科学基金(60977052)
关键词
薄膜
偏振分光膜
针式优化
激光损伤阈值
自适应光学
thin films~ polarizing beam splitter~ needle optimization~ laser induced damage threshold~ adaptive optics
