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Proceedings Paper

The optimization of zero-order diffractive filters for security imaging applications
Author(s): Dawei Zhang; Yuanshen Huang; Zhengji Ni; Jiabi Chen; Songlin Zhuang; Hongbo He
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Paper Abstract

As a result of the coupling process between the incident and the guided waves, the zero-order reflection exhibits a narrow spectral response. There were some investigations on how to control the reflectance response of filters which have diffractive structures. But these investigations only considered the case at the 0 deg azimuthal angle. In this work, one optimized structure of ZODF which had conspicuous spectral shift effect and certain spectral response for the TE polarization mode was given.

Paper Details

Date Published: 11 March 2008
PDF: 4 pages
Proc. SPIE 6984, Sixth International Conference on Thin Film Physics and Applications, 69843V (11 March 2008); doi: 10.1117/12.792249
Show Author Affiliations
Dawei Zhang, Univ. of Shanghai for Science and Technology (China)
Yuanshen Huang, Univ. of Shanghai for Science and Technology (China)
Zhengji Ni, Univ. of Shanghai for Science and Technology (China)
Jiabi Chen, Univ. of Shanghai for Science and Technology (China)
Songlin Zhuang, Univ. of Shanghai for Science and Technology (China)
Hongbo He, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 6984:
Sixth International Conference on Thin Film Physics and Applications

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