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US 6,636,547 B2Granted
Multiple grating-outcoupled surface-emitting lasers
AssigneePhotodigm, Inc.
InventorsGary A. Evans, Jay B. Kirk, Jacob Meyer Hammer
Life of this patent
Estimating the term…
Abstract
Two or more laser diodes are combined by crossing their cavities, and the multiple lasers share a common outcoupling aperture. By controlling the quantum wells in the active region, crosstalk between the devices can be eliminated. The multiple devices can also be made to crosstalk, and can be made coherent with respect to one another by mixing enough photons to phase lock the devices.
Claims24
A semi conductor laser system, comprising:
- a first grating outcoupled laser having a waveguide;
- a second grating outcoupled laser having a waveguide;
- said first laser and said second inset each outcoupling light from their respective waveguides through the same outcoupling aperture.
A solid state optical system, comprising:
- two or more crossed grating outcoupled distributed Bragg reflector lasers, each one of said lasers including waveguide, and each one or said lasers outputting light from their respective waveguide ti rough the same outcoupling location.
A semiconductor laser system, comprising:
- a first laser having a first distributed Bragg reflector at a first end and a second distributed Bragg reflector at a second end;
- a second laser having a first distributed Bragg reflector at a first end and a second distributed Bragg reflector at a second end;
- wherein said first and second lasers each have a common outcoupling aperture located between their respective distributed Bragg reflectors.
A semiconductor laser system, comprising:
- a first laser having a first distributed Bragg reflector at a first end and a second distributed Bragg reflector at a second end;
- a second laser having a first distributed Bragg reflector at a first end and a second distributed Bragg reflector at a second end;
- wherein said first and second lasers each have an outcoupling grating located between their respective distributed Bragg reflectors and connected to outcouple light;
- and
- wherein said first laser and said second laser intersect such that their respective outcoupling gratings compose a single outcoupling element.
2 more elements
A semiconductor laser system, comprising:
- three or more gratin outcoupled distributed Bragg reflector lasers, each one of said lasers including a way guide, and each one of said lasers outputting light from their respective waveguide through the same optical element.
Dependencies are inferred from the claim text.