基于ZF6基底的可见光宽谱带高性能增透膜

以ZF6为基底,采用电子束蒸发物理气相沉积方法设计并制备了一种增透波长为0.4～0.8μm的宽谱带可见光区增透膜。薄膜材料仅含有TiO2和SiO2两种材料,分别作为高低折射率材料。利用Edinburgh光谱仪对双面镀制该膜系样品的透过率进行测量,测试结果表明：薄膜平均透过率达98.15%,实际样品的光学特性与设计结果基本相符,具有宽带的增透特性,减少了表面剩余反射。机械强度与环境测试表明：制备的薄膜具有良好的稳定性和牢固度,可以应用于可靠性要求较高的光学系统中。     

金属有机化学气相外延生长1310nm偏振无关混合应变量子阱半导体光放大器研究

采用低压金属有机化学气相外延设备进行了1.3μm压应变量子阱材料、张应变量子阱材料和混合应变量子阱材料的生长研究.通过x射线双晶衍射和光致发光谱对生长材料进行测试和分析.基于四个压应变量子阱和三个张应变量子阱交替生长的混合应变量子阱（4CW3TW）结构有源区，并采用7°斜腔脊型波导结构以有效抑制腔面反射，经蒸镀减反膜后，半导体光放大器光纤光纤小信号增益达21.5dB，在1280—1340nm波长范围内偏振灵敏度小于0.6dB. 关键词： 偏振无关 应变量子阱 半导体光放大器 减反膜     

Development of Anti-Reflection (AR) Coating on Plastic Panels for Display Applications

Traditionally, various vacuum-based processes have been used for producing interference-type anti-reflection (AR) coatings on large area substrates for different commercial applications. In this paper, the development of sol-gel derived AR coating on large plastic substrates for display application is presented. The sol-gel dip coating process was used to deposit thin films on large size plastic panels. By developing sols with different refractive indices, multi-layer thin-film AR coating stacks were designed and fabricated. These coatings possess good uniformity and meet stringent automotive specifications. This technology has been commercialized successfully for dashboard instrument panel application in Toyota's new hybrid engine car, named Prius.In this paper, AR coatings prepared by the sol-gel process are reviewed. The basic design concept for an AR coating, the coating preparation procedure, and important parameters of the solution coating process are discussed. Optical constants of the coating materials were characterized by using spectroscopic ellipsometry. Optical, mechanical and environmental tests were performed on the sol-gel derived AR coating stack. The sol-gel derived AR coating possesses equivalent or superior properties when compared to the major commercially available AR coating products.     

三维腹腔镜端面宽带增透膜的研制

根据由多组镜片组成的三维腹腔镜对高透过率和不失真成像的要求,研究并选择了合适的薄膜材料;采用电子束真空镀膜加以离子辅助沉积系统,利用膜系设计软件完成了宽带增透膜的非周期膜系设计。通过调整镀膜工艺参数并采用光控与晶控同时监控的方法,减少了膜厚控制误差,成功地在多组镜片上镀制了宽带增透膜。测试试验显示,制备的膜层在400～700 nm波段的平均反射率〈0.5%,而且颜色不失真,膜层牢固,抗腐蚀效果较好,满足医用光学仪器的使用要求。