Carrier-to-noise ratio improvement with pulsed-laser readout on magnetically induced superresolution by center aperture detection disks

Authors
Chen, BM Yang, BW Hwang, WK Shieh, TE Shieh, HPD
Citation
Bm. Chen et al., Carrier-to-noise ratio improvement with pulsed-laser readout on magnetically induced superresolution by center aperture detection disks, IEEE MAGNET, 35(5), 1999, pp. 4368-4371
Citations number
10
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON MAGNETICS
ISSN journal
00189464 → ACNP
Volume
35
Issue
5
Year of publication
1999
Part
3
Pages
4368 - 4371
Database
ISI
SICI code
0018-9464(199909)35:5<4368:CRIWPR>2.0.ZU;2-D
Abstract
Magnetically induced superresolution by center aperture detection (MSR-CAD) using pulsed and conventional de schemes were applied to magneto-optical d isks to quantitatively evaluate readout performances. By simulation and exp eriments, it was found that carrier-to-noise ratio (CNR) in the pulsed-lase r readout was about 2.5 dB higher than that in the de readout scheme at mar k size of 0.45 mu m or shorter, Therefore, pulsed readout is feasible to im prove CNR and recording density in MSR-CAD disks.