Eur. Phys. J. Appl. Phys.
Volume 37, Number 2, February 2007
|Page(s)||175 - 180|
|Section||Laser and Optics|
|Published online||24 January 2007|
Near-field recording for small form factor optical disks
Devices and Materials Lab., LG Electronics Institute of Technology, 16 Woomyeon-Dong, Seocho-Gu, Seoul 137-724, Korea
Corresponding author: email@example.com
Revised: 8 October 2006
Accepted: 7 November 2006
Published online: 24 January 2007
Small form factor optical disk (SFFOD) with a diameter of 27.4 mm was prepared for a mobile application. Near-field recording (NFR) technology with a flying optical head is applied to SFFOD for high density and small volume. A problem of contamination was observed at the head-disk interface (HDI) for first-surface recording. As a solution of the problem, a cover-layer was laminated onto the disk to move the focal plane into the media, which could solve the contamination problem. An edge bead free cover-layer could be coated with UV curable resin by using an outer-ring technique during the spin coating process. A diamond-like carbon (DLC) film and a lubricant film were coated on the disk to reduce the HDI problems.
PACS: 42.79.Vb – Optical storage systems, optical disks / 42.70.Ln – Holographic recording materials; optical storage media
© EDP Sciences, 2007
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