Photorefractive device with quantum wells
US5559613A · kind A · utility
35Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1994 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Aug 5, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/13
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A photorefractive device intended to be exposed to a marking radiation which is provided so as to create a grating of interference fringes in the device and to a reading radiation diffracted by the created grating. The device includes an electro-optical material having a quantum well structure (24) and formed in an intrinsic semi-conductor matrix (22, 24) and, on both sides of the material in the semi-conductor matrix, suitable means (28, 30) to trap, both parallel to the axis of the structure and perpendicular to this axis, free carriers generated by the marking radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.