Ion and impurity concentration optimization in photorefractive media for dynamic and fixed holography
US5729364A · kind A · utility
5Cited by
6References
22Claims
0Family size
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Key dates
| Filing date | Jul 5, 1996 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Jul 5, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2001/0268
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Ionic and impurity concentrations in a photorefractive holographic storage medium are optimized such that electronic and ionic Debye numbers match an expected grating wave number K, at fixing and recording temperatures, respectively. Simultaneous and sequential recording and fixing are evaluated. The photovoltaic effect is reduced, subject to response time and absorption constraints, by matching reduced and oxidized impurity concentrations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.