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Proceedings Paper

Possibility of phase-contrast pickup head for two-layered optical disk
Author(s): Shuai Zhao; Changhe Zhou; Peng Xi; Liren Liu
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Paper Abstract

Zernike phase-contrast method is proposed for its application to optical pickup head for the two-layer optical disk. The most attractive feature of this proposed approach is that a very simple architecture can be fabricated for simultaneous readout of both layers with only one objective lens. After giving the basic theoretical analyses of Zernike phase-contrast method, we constructed one feasible system based on this method and discussed the influences caused by the possible phase change of the high order spectrum and the finite aperture. The experimental demonstration of the proposed system is given.

Paper Details

Date Published: 6 December 2001
PDF: 6 pages
Proc. SPIE 4470, Photonic Devices and Algorithms for Computing III, (6 December 2001); doi: 10.1117/12.449663
Show Author Affiliations
Shuai Zhao, Shanghai Institute of Optics and Fine Mechanics (China)
Changhe Zhou, Shanghai Institute of Optics and Fine Mechanics (China)
Peng Xi, Shanghai Institute of Optics and Fine Mechanics (China)
Liren Liu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 4470:
Photonic Devices and Algorithms for Computing III
Khan M. Iftekharuddin; Abdul Ahad Sami Awwal, Editor(s)

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