Process for photorefractive index grating formation
US6280884A · kind A · utility
7Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1994 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Apr 21, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2260/54
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to an improved process for photorefractive index grating formation utilizing polymeric photorefractive materials. The process involves the steps of: (i) exposing a polymeric optical article to electromagnetic radiation having an intensity of at least 0.05 W/cm.sup.2 for a short period of time to achieve an absorbed energy/unit volume of at least 1.times.10.sup.3 J/cm.sup.3 to activate the article, and (ii) exposing the polymeric optical article to an electric field and electromagnetic radiation to form an index grating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.