Optical data storage readout with quadrant pupil detection

被引：7

作者：

Milster, TD

Chen, Z

Walker, EP

Tuell, MT

Gage, EC

机构：

[1] ACAD SINICA,CHANGCHUN INST OPT & FINE MECH,STATE KEY LAB APPL OPT,CHANGCHUN 130022,PEOPLES R CHINA

[2] EASTMAN KODAK CO,ROCHESTER,NY 14652

来源：

APPLIED OPTICS | 1996年 / 35卷 / 14期

关键词：

optical data storage; magneto-optics; high-density recording; cross talk; tracking error signal;

D O I：

10.1364/AO.35.002471

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel detection scheme that uses combinations of quadrant signals derived in a pupil of the optical system is described for optical storage devices. The signals arise because of an asymmetry in the reflected light distribution when the focused spot scans data with a nonzero tracking offset. Theoretical and scalar diffraction characterization indicates that the signals may be useful for improved data density by reducing intertrack interference (cross talk). The signals may also be useful for providing a tracking error signal. (C) 1996 Optical Society of America

引用

页码：2471 / 2476

页数：6