Journal
APPLIED OPTICS
Volume 52, Issue 23, Pages 5788-5793Publisher
OPTICAL SOC AMER
DOI: 10.1364/AO.52.005788
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Funding
- National Natural Science Foundation of China [61008030, 61108014, 61108036]
- 863 program of China
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We proposed an analytical method to design optical minus filters by the thickness modulation of discrete, homogeneous thin-film layers of a two-material multilayer coating. The main stack provides the narrow, second-order rejection band, and the correct thickness-modulation apodization and match layers can effectively suppress the sidelobes of the passband. Using this approach, we can design minus filters with layer thicknesses close to half-wave of the rejection wavelength, making this method well suited for accurate monitoring during the deposition. (C) 2013 Optical Society of America
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