Method and apparatus for enhancing the utility of a photopolymer recording media for holographic data recording
US5377179A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1993 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | Oct 19, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2270/54
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A holographic storage media (10) is fabricated from a thin layer of photopolymer recording media. The photopolymer recording media is disposed between a substrate (48) and a capping layer (56). The media (10) is divided into a plurality of storage regions (54), which are formed within wells (52) to isolate each of the regions (54). During a record operation, a pumping operation is first performed to remove oxygen molecules from the media by bombarding the select region that is to have an interference pattern recorded therein with photons for a predetermined duration of time. Once the oxygen molecules have been depleted, then a data beam is generated with data superimposed thereon and a reference beam generated for interference with the data beam in the storage region (54). This results in the recording of an interference pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.