Abstract
Recording marks in digital versatile disc-random access memory (DVD-RAM) were examined using a scanning near-field optical microscope (SNOM) incorporating an improved probe tip design. The marks were recorded on an experimental DVD-RAM medium with a track-pitch of 0.6 μm. The tip size of the SNOM was made wider than the track width in order to avoid optical ghosting arising from the track edge. The recording power was varied in order to investigate the dependence of the mark shape on power and it was found that the mark shape correlated well with the reproduced signal. The SNOM is considered to be a good candidate for a practical characterization tool for optical recording media.
| Original language | English |
|---|---|
| Pages (from-to) | 3599-3602 |
| Number of pages | 4 |
| Journal | Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers |
| Volume | 39 |
| Issue number | 6 A |
| DOIs | |
| Publication status | Published - 2000 |
| Externally published | Yes |
Keywords
- Carrier-to-noise ratio
- DVD-RAM
- Phase-change
- Probe tip
- Recording mark
- Scanning near-field optical microscope
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)