Spatially addressable surface emission sum frequency device

Details Spatially addressable surface emission sum frequency device Spatially addressable surface emission sum frequency device

1993-03-11

1994-09-06

Epps, Georgia Y.

Coherent light generators

Particular beam control device

Nonlinear device

372 50, 372 45, 372 21, 359328, 385131, H01S 310

Patent

active

053454561

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.

REFERENCES:
patent: 5051617 (1991-09-01), Normandin et al.
patent: 5103456 (1992-04-01), Scifres et al.
patent: 5111466 (1992-05-01), Normandin et al.
patent: 5241413 (1993-08-01), Uenishi et al.

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