"Contact" solid immersion lens near-field optical recording in magneto-optical TbFeCo media

Citation
A. Chekanov et al., "Contact" solid immersion lens near-field optical recording in magneto-optical TbFeCo media, J APPL PHYS, 85(8), 1999, pp. 5324-5326
Citations number
3
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF APPLIED PHYSICS
ISSN journal
00218979 → ACNP
Volume
85
Issue
8
Year of publication
1999
Part
2B
Pages
5324 - 5326
Database
ISI
SICI code
0021-8979(19990415)85:8<5324:"SILNO>2.0.ZU;2-#
Abstract
The solid immersion lens (SIL) near-field magneto-optical (MO) recording te chnique offers a significant increase in areal density through near-field r esolution enhancement. Since the near-field recording scheme requires close proximity of the optical recording head and the magnetic medium, the SIL M O recording setup is usually changed to a "first surface" recording. This r equires further optimization of the optical flying head design and a MO med ium. In this work marks as small as 150 nm using a SIL with a 680 nm laser source and a TbFeCo magneto-optical medium were recorded. The minimum size of a recorded mark is strongly dependent on the slider flying height, the f lying attitude, and lens centering. It should be emphasized that recording power as small as 4 mW is sufficient enough to achieve carrier-to-noise rat io of more than 30 dB. (C) 1999 American Institute of Physics. [S0021-8979( 99)38008-7].