Effect of beam profile on the cross talk of land and groove recording

Abstract

Numerical analyses were conducted to simulate the effects of different Gaussian-weighted beams and disk geometries on the read-out signal cross talk of land and groove recording of phase-change optical disk systems. The optimized groove depth, which yields a minimum cross-talk noise, differs for different Gaussian-weighted beams and different track pitches. This beam profile dependence of the optimum groove depth is undesirable for practical application of this technique, because different optical systems may have different beam profiles at the lens aperture plane. It is found that this effect can be reduced to a certain extent by introduction of an appropriate shading band filter.

© 1999 Optical Society of America

Numerical analysis of readout-signal cross talk in magneto-optical land and groove recording

K. B. Chung
Appl. Opt. 36(8) 1789-1795 (1997)

Optimization of groove depth for cross-talk cancellation in the scheme of land–groove recording in magneto-optic disk systems

Timothy D. Goodman and M. Mansuripur
Appl. Opt. 35(7) 1107-1119 (1996)

Readout signals calculated for near-field optical pickups with land and groove recording

Kimihiro Saito, Koichiro Kishima, and Isao Ichimura
Appl. Opt. 39(23) 4153-4159 (2000)

Computation of effective groove depth in an optical disk with vector diffraction theory

Wei-Hung Yeh, Lifeng Li, and M. Mansuripur
Appl. Opt. 39(2) 316-323 (2000)

Cross talk in photochemical three-dimensional optical recording

N. Bityurin, B. Luk’yanchuk, M. Hong, and T. Chong
Opt. Lett. 29(17) 2055-2057 (2004)