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Proceedings Paper

OTF and PSF of circular-grating optical scanning holography
Author(s): Wanguo Liang; Dazun Zhao; Jinghui Xie; Yeling Zhao
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Paper Abstract

The recording of the hologram in the optical scanning holography (OSH) proposed by T.C. Poon is a process in which a Fresnel zone plate (FZP) is used to scan the object, but since the spacing between two adjacent rings of FZP at the center portion is greater than that at the edge portion, the resolution capability of the system, which can resolve the edge portion of the FZP, is not fully exploited. The fact that a circular grating (CG) has uniform spacings everywhere, enlightens us to suggest the CG optical scanning holography. It has been found that the optical transfer function of the system equals the Fourier transform of the intensity transmissivity of the projecting circular grating, and the point spread function of the system equals to a (delta) function. Also given in this paper are the principles of the CG optical scanning holography and the computer simulations.

Paper Details

Date Published: 11 August 1998
PDF: 8 pages
Proc. SPIE 3553, Detectors, Focal Plane Arrays, and Imaging Devices II, (11 August 1998); doi: 10.1117/12.318078
Show Author Affiliations
Wanguo Liang, Beijing Institute of Technology (France)
Dazun Zhao, Beijing Institute of Technology (China)
Jinghui Xie, Beijing Institute of Technology (China)
Yeling Zhao, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 3553:
Detectors, Focal Plane Arrays, and Imaging Devices II
Pingzhi Liang; Marc Wigdor; William G. D. Frederick, Editor(s)

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