An improved transmitting multi-layer thin-film filter

The angular resolutions of the phase-shifted Rugate thin-film filters, the ultra-narrow bandpass filters, and a cutoff filter-combination device are discussed, and the electric field distributions of the filters are compared. The results show that the three transmitting multi-layer thin-film filters...

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Bibliographic Details
Published in:Chinese physics B 2015-05, Vol.24 (5), p.398-403
Main Author: 章瑛 齐红基 易葵 王胭脂 隋展 邵建达
Format: Article
Language:English
Subjects:
Angular resolution
Devices
Electric fields
Electric filters
Electric power distribution
Multilayers
Thin films
thin-film filter
Transmission
发射
带通滤波器
电场分布
空间滤波器
组合装置
薄膜滤波器
角度分辨率
高功率激光系统
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Summary:The angular resolutions of the phase-shifted Rugate thin-film filters, the ultra-narrow bandpass filters, and a cutoff filter-combination device are discussed, and the electric field distributions of the filters are compared. The results show that the three transmitting multi-layer thin-film filters can realize the same angular resolution, but the electric field in the cutoff filter-combination device is the lowest. Because a lower electric-field distribution corresponds to a higher laser-induced damage threshold of the thin films, the cutoff filter-combination device may replace the traditional spatial filters in high power laser systems.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/24/5/054212