Phase addressed holographic associative memory
US8199387B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2009 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Nov 15, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2225/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a holographic storage apparatus comprising a polarizing beam splitter configured to split an incoming beam into an object beam and a reference beam; a first spatial light modulator configured to modulate the object beam with an array of data; a second spatial light modulator configured to phase modulate the reference beam with an orthogonal phase function; a holographic medium configured to record an interference pattern between the modulated object beam and the modulated reference beam; a first image sensor configured to read an image of the modulated object beam; and a second image sensor configured to read an image of the modulated reference beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.