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 language | English (US) |
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Pages (from-to) | 2124-2129 |
Number of pages | 6 |
Journal | Japanese Journal of Applied Physics |
Volume | 37 |
Issue number | 4 SUPPL. B |
DOIs | |
State | Published - Apr 1998 |
Keywords
- Nonlinear optics
- Optical disk mastering
- Solid state laser
- Sum-frequency mixing
- Ultraviolet laser
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)