Near-field recording with 266 nm laser for disc mastering process

Author

Imanishi, Shingo ; Takeda, Minoru ; Yamamoto, Masanobu ; Mukai, Nobuhiko ; Takagi, Katsuji ; Kono, Toshiyuki

Author_Institution

Nano-lithography Sect., Sony Corp., Tokyo, Japan

fYear

2002

fDate

2002

Firstpage

296

Lastpage

298

Abstract

We developed a near-field recording process with a 266 nm blue-violet laser and an objective lens of 1.35 NA. A two-stage servo with air suspension and PZT control sufficiently constrained the gap fluctuation between the supersphere solid immersion lens (SIL) and the glassmaster. As a result, the expected small size of the pit pattern was obtained. We expect that this breakthrough will be refined much more and improve the density of optical recording.

Keywords

laser beam applications; optical disc storage; 20 GB; 25 GB; 266 nm; PZT control; RAM disk; ROM disc; air suspension; blue-violet laser diodes; near-field disc mastering process; near-field recording process; optical recording density improvement; random access memory disk; supersphere solid immersion lens; two-stage servo; Actuators; Disk recording; Electrooptic modulators; Fluctuations; Laser beams; Lenses; Optical refraction; Optical sensors; Optical surface waves; Optical variables control;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Memory and Optical Data Storage Topical Meeting, 2002. International Symposium on

Print_ISBN

0-7803-7379-0

Type

conf

DOI

10.1109/OMODS.2002.1028646

Filename

1028646

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2169919