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US 9,829,778 B2Granted
Laser light source
AssigneeSoraa Laser Diode, Inc.
InventorsJames W. Raring, Paul Rudy
Life of this patent
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Abstract
The present invention is directed to a laser light source.
Claims16
A light apparatus, the apparatus comprising:
- a housing;
- an edge emitting laser diode device coupled to the housing, the edge emitting laser diode device comprising a gallium and nitrogen containing material, the edge emitting laser diode device comprising:
- an n-cladding layer with a thickness from 100 nm to 5000 nm with Si doping level of 1E17 to 3E18 cm-3;
- an n-side separate confinement heterostructure (SCH) layer comprised of InGaN having a molar fraction of In of between 3% and 10% and a thickness from 20 nm to 100 nm;
- multiple quantum well active region layers comprised of at least two InGaN quantum wells each having a thickness from 2 nm to 8.5 nm and separated by GaN barriers having a thickness from 2.5 nm to 8 nm;
- a p-cladding layer with a thickness from 400 nm to 1000 nm with Mg doping level of 2E17 to 2E19 cm-3;
- a p++-GaN contact layer with a thickness from 20 nm to 40 nm with Mg doping level of 1E19 to 1E21 cm-3;
- and
- a non-polar or semipolar configuration characterizing the gallium and nitrogen containing material;
- an optical component coupled to an output laser beam of the edge emitting laser diode device;
- a phosphor material coupled to the edge emitting laser device to be excited by a laser beam from the edge emitting laser diode device;
- and
- a substantially white light output from the edge emitting laser diode device.
10 more elements
A light source apparatus comprising:
- a housing;
- a plurality of edge emitting laser diode devices disposed on a common gallium and nitrogen containing material, each of the plurality of edge emitting laser diode devices configured to emit a laser beam at a different wavelength, at least one of the plurality of edge emitting laser diode devices comprising:
- an n-cladding layer with a thickness from 100 nm to 5000 nm and a Si doping level of 1E17 to 3E18 cm-3;
- an n-side separate confinement heterostructure (SCH) layer comprised of InGaN having a molar fraction of In of between 3% and 10% and a thickness from 20 nm to 100 nm;
- multiple quantum well active region layers comprised of at least two InGaN quantum wells each having a thickness from 2 nm to 8.5 nm and separated by GaN barriers having a thickness from 2.5 nm to 8 nm;
- a p-cladding layer with a thickness from 400 nm to 1000 nm with Mg doping level of 2E17 to 2E19-3;
- and
- a p++-GaN contact layer with a thickness from 20 nm to 40 nm with Mg doping level of 1E19 to 1E21 cm-3;
- an output provided on the plurality of edge emitting laser diode devices to output a laser beam;
- and
- one or more optical members coupled to the output of the plurality of edge emitting laser diode devices, at least one of the one or more optical members comprising a phosphor material, the one or more optical members configured to output a substantially white emission.
8 more elements
A light apparatus, the apparatus comprising:
- a housing;
- an edge emitting laser diode device coupled to the housing, the edge emitting laser diode device comprising a gallium and nitrogen containing material, the edge emitting laser diode device comprising:
- an n-cladding layer with a thickness from 100 nm to 5000 nm and a Si doping level of 1E17 to 3E18 cm-3;
- an n-side separate confinement heterostructure (SCH) layer comprised of InGaN having a molar fraction of In of between 3% and 10% and a thickness from 20 nm to 100 nm;
- multiple quantum well active region layers comprised of at least two InGaN quantum wells each having a thickness from 2 nm to 8.5 nm and separated by GaN barriers having a thickness from 2.5 nm to 8 nm;
- a p-cladding layer with a thickness from 400 nm to 1000 nm with Mg doping level of 2E17 to 2E19 cm-3;
- and
- a p++-GaN contact layer with a thickness from 20 nm to 40 nm with Mg doping level of 1E19 to 1E21 cm-3;
- an optical component coupled to an output laser beam of the edge emitting laser diode device;
- a color wheel having phosphor material, the color wheel coupled to the edge emitting laser diode device, the phosphor material arranged to be excited by a laser beam from the edge emitting laser diode device;
- a substantially white light output from the color wheel;
- a reflector coupled to an output of the edge emitting laser diode device;
- and
- a controller coupled to the light apparatus;
- wherein the optical component comprises a waveguide coupled to the edge emitting laser diode device.
12 more elements
Dependencies are inferred from the claim text.