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Proceedings Paper

Self-focusing difference frequency grating filter
Author(s): Xianming Ji; Renwang Mu; Liangkai Han; Jin Zhou; Wenqi Guo
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Paper Abstract

A phase type optical image differential filter made by binary optical method is presented in this paper. It combines two phase type Ronchi gratings which have close frequency with off-axis phase-Fresnel-zone plate, called self-focusing differential frequency grating filter. It has several advantages such as high diffraction efficiency, simple optical path and convenient operation.

Paper Details

Date Published: 16 September 2002
PDF: 5 pages
Proc. SPIE 4929, Optical Information Processing Technology, (16 September 2002); doi: 10.1117/12.483250
Show Author Affiliations
Xianming Ji, Nantong Teachers College (China)
Renwang Mu, Nantong Teachers College (China)
Liangkai Han, Nantong Teachers College (China)
Jin Zhou, Nanjing Univ. (China)
Wenqi Guo, Nanjing Univ. (China)


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

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