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Proceedings Paper

Metamaterial-based low-pass spatial filters for high-power lasers
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Paper Abstract

Two kinds of novel spatial filters constructed by metamaterials and their possible applications in high-power laser systems have been investigated. The first one can be constructed by forming a compensating bilayer of indefinite metamaterials. It is shown that the cutoff wave vector of the low-pass spatial filter can be adjusted desirably. The second kind of low-pass spatial filter is based on the controllable dispersion characteristics of photonic crystals. With proper design, the higher spatial frequency components, which are incident to the filter with angles exceed a critical value, are reflected totally because no Bloch waves of the photonic crystals can be excited. However, the lower spatial frequency components are coupled to the self-collimating modes and permeate with high transmission. The applications of the two novel kinds of metamaterials-based low-pass spatial filter in high-power lasers are discussed.

Paper Details

Date Published: 6 February 2008
PDF: 9 pages
Proc. SPIE 6823, High-Power Lasers and Applications IV, 68230K (6 February 2008); doi: 10.1117/12.755124
Show Author Affiliations
Yuanjiang Xiang, Hunan Univ. (China)
Wenhua Su, Hunan Univ. (China)
Xiaoyu Dai, Hunan Univ. (China)
Zhixiang Tang, Hunan Univ. (China)
Shuangchun Wen, Hunan Univ. (China)
Dianyuan Fan, Hunan Univ. (China)

Published in SPIE Proceedings Vol. 6823:
High-Power Lasers and Applications IV
Dianyuan Fan; Robert F. Walter, Editor(s)

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