Method and apparatus for phase-encoded homogenized Fourier transform holographic data storage and recovery
US7411708B2 · kind B2 · utility
12Cited by
9References
28Claims
0Family size
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Key dates
| Filing date | Oct 8, 2004 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Feb 20, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2225/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for writing and reading holograms, comprising a spatial light modulator (SLM) operable in phase mode, having a plurality of pixels for generating an object beam that overlaps with a reference beam; a holographic recording medium (HRM) in the path of the object beam; and a first lens element disposed in the path of the object beam between the SLM and the HRM; wherein the HRM is disposed at or near the Fourier transform plane of the first lens element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.