发光学报2017，Vol.38Issue(12)：1675-1680,6.DOI:10.3788/fgxb20173812.1675
双波段截止分色滤光片研究
Study of Dual-band Cut-off for Edge Filter
摘要
Abstract
To realize the characters of a dual-band filter that selectively transmit light of wavelengths of 0. 83-0. 87μm but cut off the wavelengths of 0. 5-0. 68μm and 0. 73-0. 79μm on a 45° incident an-gle on K9 substrate, a type of F-P bandpass filter was chosen to be the initial structure which effectively reduce the number of the thin film compared with the routine design concept. The high index material of titanium oxide (TiO2) and the low index material of silicon oxide (SiO2) were used during the course. The thickness of 23 layers was 2. 278 μm. The electron beam physical vapor deposition ( EBPVD) was used to fabricate the coatings. The transmittance of the sample was measured by using the spectrophotom-eter. The average cutoff depth is 12. 57% and 20. 39% corresponded to the band from 0. 5 μm to 0. 68μm and the band from 0. 73μm to 0. 79μm respectively from the test result. The average transmittance is up to 91. 35% for the pass band from 0. 83μm to 0. 87μm. It appears almost the same with the desig-ning result that the figure of transmittance shifts to the short wavelength by 10 nm. Beyond this, the edge filter cuts off in dual-band and gets the high transmittance in pass band. In the environmental tests, the coatings match well with each other which is remarkably stable. So, the dual-band cut-off edge filter can be applied in extreme cases.关键词
光学薄膜/电子束蒸发物理气相沉积/滤光片Key words
optical thin film/electron beam physical vapor deposition( EBPVD)/filter分类
数理科学引用本文复制引用
曹晶辉,苏宙平,胡莹,胡立发,朱华新..双波段截止分色滤光片研究[J].发光学报,2017,38(12):1675-1680,6.基金项目
上海市全固态激光器与应用技术重点实验室开放课题(2012ADL03) （2012ADL03）
国家自然科学基金(60908041) （60908041）
江苏省研究生创新项目(SJLX16_0492)资助Supported by Shanghai Solid State Laser and Applied Technology Key Laboratory Open Topic(2012ADL03) （SJLX16_0492）
National Natural Science Foundation of China(60908041) （60908041）
Jiangsu Province Graduate Innovation Project(SJLX16_0492) （SJLX16_0492）
