Disk mastering process with an all-solid-state ultraviolet laser

Yushi Kaneda, Shigeo Kubota, Hisayuki Yamatsu, Motohiro Furuki, Koutaroh Kurokawa, Toshiyuki Kashiwagi

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

The mastering process of the optical disk is demonstrated using an all-solid-state ultraviolet laser for the first time. A 355-nm emission is obtained by the nonlinear frequency mixing between 1064nm and 532nm using β-BaB2O4 crystal in an external resonator. The laser head is efficient hence it does not require water cooling. A 30% improvement over the argon ion gas lasers is obtained in the track pitch variation with the 0.74μm-pitch-tracks. The absence of the water flow for the cooling is the reason for the improvement. The optics designed at 351 nm turned out to be compatible with the 355-nm laser source.

Original languageEnglish (US)
Pages (from-to)2124-2129
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume37
Issue number4 SUPPL. B
Publication statusPublished - Apr 1998
Externally publishedYes

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Keywords

  • Nonlinear optics
  • Optical disk mastering
  • Solid state laser
  • Sum-frequency mixing
  • Ultraviolet laser

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Engineering(all)

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