Abstract

Much attention has been focused on the effects of the disk substrate in optical data storage. In particular, substrate birefringence has been studied extensively because it causes significant problems in magneto-optic systems. We investigate certain subtle effects of the substrate, such as feedback into the laser diode, in compact disk and phase-change systems. Our analysis of the compact disk system led us to discover a new technique for the rapid measurement of the substrate birefringence. We also address the question of how focusing the laser beam through the substrate will affect the depth of focus.

© 1996 Optical Society of America

Effects of substrate birefringence on focusing and tracking servo signals in magneto-optical disk data storage

Satoshi Sugaya and M. Mansuripur
Appl. Opt. 33(22) 5073-5079 (1994)

Temperature dependence of the birefringence of optical-disk substrates

Timothy D. Goodman, Ronald E. Gerber, and M. Mansuripur
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Tilt correction in an optical disk system

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Appl. Opt. 35(35) 7000-7007 (1996)