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Proceedings Paper

Diffraction from grating surfaces of a negative index metamaterial
Author(s): Min Cheng; Yingwu Zhou; Yuliang Li; Xiyao Chen; Xuemei Li; Qinxuan Huang
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Paper Abstract

We discuss the diffraction of waves due to the periodically corrugated boundary of vacuum and a linear, homogeneous negative refraction index metamaterials (NIM). We show by numerical simulation that the grating surfaces can give rise to a well-defined diffracted beam in addition to the negatively refracted beam. The direction of the diffracted beam is consistent with elementary diffraction theory; however, the coupling to this higher order beam is much larger than would be the case for a positive index material (PIM). To explore the properties of diffracted beams in a negative-index sample, we simulate a wave incident on the interface between a NIM grating and free space. The numerical study provides an indication of the relative coupling of the incident wave to the zeroth and first order beams.

Paper Details

Date Published: 4 January 2008
PDF: 9 pages
Proc. SPIE 6832, Holography and Diffractive Optics III, 68321W (4 January 2008);
Show Author Affiliations
Min Cheng, Minjiang Univ. (China)
Yingwu Zhou, Minjiang Univ. (China)
Yuliang Li, Minjiang Univ. (China)
Xiyao Chen, Minjiang Univ. (China)
Xuemei Li, Minjiang Univ. (China)
Qinxuan Huang, Minjiang Univ. (China)

Published in SPIE Proceedings Vol. 6832:
Holography and Diffractive Optics III
Yunlong Sheng; Dahsiung Hsu; Chongxiu Yu, Editor(s)

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