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Proceedings Paper

Focus servo subsystem design for hybrid magneto-optical recording testing system
Author(s): Qing Zhu; Wendong Xu
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Paper Abstract

Astigmatism method was employed to detect focus error signal in hybrid recording testing system. Frequency characteristics of piezoelectric nano-positioner were measured, based on which we designed focus servo controller using available frequency-domain integrated correction method. The requirement for disk vertical deviation is also discussed according to system expected characteristics. Then we choose air bearing turntable motor to meet the disk deviation requirement.

Paper Details

Date Published: 21 November 2007
PDF: 5 pages
Proc. SPIE 6827, Quantum Optics, Optical Data Storage, and Advanced Microlithography, 68271K (21 November 2007); doi: 10.1117/12.757600
Show Author Affiliations
Qing Zhu, Shanghai Institute of Optics and Fine Mechanics (China)
Wendong Xu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 6827:
Quantum Optics, Optical Data Storage, and Advanced Microlithography
Chris A. Mack; Jinfeng Kang; Jun-en Yao; Guangcan Guo; Song-hao Liu; Osamu Hirota; Guofan Jin; Kees A. Schouhamer Immink; Keiji Shono, Editor(s)

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