Optical information recording method, optical information recording medium, optical information reproducing device, optical information reproducing method and optical information recording and reproducing device
US8116194B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2009 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Feb 4, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/2531
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention is able to enhance a recording speed. In the invention, a recording mark (RM) composed of a cavity is formed by vaporizing a two-photon absorbing material by a two-photon absorption reaction as an embodiment of a photoreaction against a recording light beam (L1) as recording light to be condensed at the time of recording information. Also, in a recording layer (101), the information is reproduced on the basis of a return light beam (L3) formed by modulation of a readout light beam (L2) irradiated as prescribed readout light at the time of reproducing inform in conformity with the presence of absence of the recording mark (RM). Then, in the recording layer (101), in view of the fact that the a two-photon absorbing particle having a two-photon absorbing material coordinated with a metal fine particle (MN) is dispersed in a binder resin configuring the recording layer (101), the two-photon absorbing material having a two-photon absorbing characteristic is disposed as a vaporizable material in the vicinity of the metal fine particle (MN) dispersed in the binder resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.