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Proceedings Paper

Phase and amplitude modulation of a two-dimensional subwavelength diffractive optical element on artificial distributed-index medium
Author(s): Hwi Kim; Byoungho Lee
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Paper Abstract

In this paper, we investigate the characteristics of the binary lamellar grating having the period smaller than the wavelength of the incident light and propose the structure of a novel binary subwavelength diffractive optical element (SWDOE). The effective medium theory and the birefringence multi-layer analysis method are used to analyze the proposed DOE structure. It is shown that the polarization sensitivity of the subwavelength scale lamellar grating can be used to design the SWDOE that can modulate both the phase and the amplitude of the incident light. In view of the synthesis of DOE, that is, the nonlinear optimization, the amplitude modulation means the extension of the degree of freedom for the design of DOE. So the relation between the phase and the amplitude modulation is derived through the numerical analysis.

Paper Details

Date Published: 16 September 2002
PDF: 8 pages
Proc. SPIE 4929, Optical Information Processing Technology, (16 September 2002); doi: 10.1117/12.483233
Show Author Affiliations
Hwi Kim, Seoul National Univ. (South Korea)
Byoungho Lee, Seoul National Univ. (South Korea)

Published in SPIE Proceedings Vol. 4929:
Optical Information Processing Technology
Guoguang Mu; Francis T. S. Yu; Suganda Jutamulia, Editor(s)

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