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Proceedings Paper

Study on phase characteristics of subwavelength metallic holes
Author(s): Chunlei Du; Yuan Duan; Chongxi Zhou; Qiling Deng; Xiangang Luo
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Paper Abstract

Phase modulation characteristics of subwavelength metallic square holes are investigated for 2D imaging purpose. Based on Maxwell equations, the transmission model of three-dimension subwavelength metallic holes is founded by a mode expansion technique. The relationship between the widths of the holes and the phase from -π to π is established when the thickness of metallic film is given. Then the influences of coupling electromagnetic (EM) fields as well as the incident angle on phase retardation are investigated and calculated through varying the center distance between double holes. A slab lens is demonstrated by using hole-array formed on a metallic film, which verifies the theoretic analysis.

Paper Details

Date Published: 15 January 2008
PDF: 6 pages
Proc. SPIE 6832, Holography and Diffractive Optics III, 68320D (15 January 2008); doi: 10.1117/12.757664
Show Author Affiliations
Chunlei Du, Institute of Optics and Electronics (China)
Yuan Duan, Institute of Optics and Electronics (China)
Chongxi Zhou, Institute of Optics and Electronics (China)
Qiling Deng, Institute of Optics and Electronics (China)
Xiangang Luo, Institute of Optics and Electronics (China)

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

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