ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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An improved transmitting multi-layer thin-film filter |
Zhang Ying (章瑛)a b, Qi Hong-Ji (齐红基)a, Yi Kui (易葵)a, Wang Yan-Zhi (王胭脂)a, Sui Zhan (隋展)c, Shao Jian-Da (邵建达)a |
a Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; b University of Chinese Academy of Sciences, Beijing 100039, China; c Research Center of Laser Fusion, Chinese Academic of Engineering Physics, Mianyang 621900, China |
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Abstract 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.
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Received: 04 September 2014
Revised: 22 November 2014
Accepted manuscript online:
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PACS:
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42.79.Ci
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(Filters, zone plates, and polarizers)
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42.79.Wc
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(Optical coatings)
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Corresponding Authors:
Shao Jian-Da
E-mail: jdshao@siom.ac.cn
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About author: 42.79.Ci; 42.79.Wc |
Cite this article:
Zhang Ying (章瑛), Qi Hong-Ji (齐红基), Yi Kui (易葵), Wang Yan-Zhi (王胭脂), Sui Zhan (隋展), Shao Jian-Da (邵建达) An improved transmitting multi-layer thin-film filter 2015 Chin. Phys. B 24 054212
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