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Proceedings Paper

Analysis of cylindrical subwavelength diffractive optical elements by an approximate vectorial diffraction method
Author(s): Jia-sheng Ye; Yan Zhang
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Paper Abstract

Vectorial diffraction methods provide accurate analysis of subwavelength diffractive optical elements, but they usually consume a lot of computing time and computer memory. On the other hand, scalar diffraction methods have simpler physical models and cost much less computer resources at the expense of a large numerical error. Therefore, an approximate method is highly required, which can substantially relieve the computational burden and possess a high accuracy. We firstly propose such an approximate vectorial method, i.e., the improved first Rayleigh-Sommerfeld method (IRSM1), and apply it to analysis of two-dimensional (2-D) cylindrical microlenses and metallic cylindrical focusing micromirrors. The IRSM1 is clearly proved to be much more accurate than the scalar diffraction method. In addition, compared with the vectorial boundary element method, the IRSM1 consumes much less computing time and computer memory. Besides of the above, the IRSM1 is expected to be used in optical designs of subwavelength diffractive optical elements by incorporating with the simulated annealing method or the Yang-Gu algorithm.

Paper Details

Date Published: 20 November 2009
PDF: 11 pages
Proc. SPIE 7510, 2009 International Conference on Optical Instruments and Technology: MEMS/NEMS Technology and Applications, 751009 (20 November 2009); doi: 10.1117/12.838034
Show Author Affiliations
Jia-sheng Ye, Capital Normal Univ. (China)
Yan Zhang, Capital Normal Univ. (China)


Published in SPIE Proceedings Vol. 7510:
2009 International Conference on Optical Instruments and Technology: MEMS/NEMS Technology and Applications
Zhaoying Zhou; Toshio Fukuda; Helmut Seidel; Xinxin Li; Haixia Zhang; Tianhong Cui, Editor(s)

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