Self-referenced holographic storage
US6538776B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 20, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Apr 3, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2001/0417
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention presents the concept of self-referenced holographic data recording. In exemplary embodiments, the invention comprises methods of recording holograms on holographic data storage media; media produced by such methods; and self-referencing holographic data storage systems. A method of recording data in a holographic recording medium may comprise illuminating a medium with a data encoded first optical beam, optically directing a zero frequency Fourier component of the first optical beam to create a second optical beam, and illuminating the medium with the second optical. In some embodiments, for example, a self-referencing holographic data storage system has a single optical path directed towards a medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.