Spatially addressable surface emission sum frequency device
US5345456A · kind A · utility
24Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1993 |
| Grant date | Sep 6, 1994 |
| Priority date | — |
| Expiry date | Mar 11, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/34313
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An active surface-emitting harmonic generator based on a multilayer Al.sub.x Ga.sub.1-x As non linear waveguide integrated monlithically with a tunable InGaAs single quantum well laser is provided. Controlling the difference in frequency between a signal provided by the tunable laser and another input optical signal allows an output signal to be directed to any of a plurality of directions in space. Positioning detectors near the monolithic device allows spatial addressing. The controllable monolithic device may also be used to scan and thus to read data stored on holographic media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.