Solid state laser device using a selected crystal orientation in non-polar or semi-polar GaN containing materials and methods
First Claim
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1. A laser device comprising:
- a gallium and nitrogen containing crystalline material having a nonpolar m-plane surface region;
a laser cavity formed within a portion of the gallium and nitrogen containing crystalline material, the laser cavity being characterized by a length extending from a first end to a second opposite end;
a first facet provided on the first end; and
a second facet provided on the second end;
wherein the length of the laser cavity is along a direction that is at an angle measured in degrees from a [0001] direction of the gallium and nitrogen containing crystalline material; and
wherein the length of the laser cavity is at an angle of between about 0.3 degrees to about 30 degrees or between about −
0.3 degrees to about −
30 degrees from a [0001] direction of the gallium and nitrogen containing crystalline material.
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Abstract
An edge emitting solid state laser and method. The laser comprises at least one AlInGaN active layer on a bulk GaN substrate with a non-polar or semi-polar orientation. The edges of the laser comprise {1 1−2±6} facets. The laser has high gain, low threshold currents, capability for extended operation at high current densities, and can be manufactured with improved yield. The laser is useful for optical data storage, projection displays, and as a source for general illumination.
216 Citations
16 Claims
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1. A laser device comprising:
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a gallium and nitrogen containing crystalline material having a nonpolar m-plane surface region; a laser cavity formed within a portion of the gallium and nitrogen containing crystalline material, the laser cavity being characterized by a length extending from a first end to a second opposite end; a first facet provided on the first end; and a second facet provided on the second end; wherein the length of the laser cavity is along a direction that is at an angle measured in degrees from a [0001] direction of the gallium and nitrogen containing crystalline material; and wherein the length of the laser cavity is at an angle of between about 0.3 degrees to about 30 degrees or between about −
0.3 degrees to about −
30 degrees from a [0001] direction of the gallium and nitrogen containing crystalline material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of forming a laser device comprising:
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providing a gallium and nitrogen containing crystalline material having a nonpolar m-plane surface region; providing a laser cavity formed within a portion of the gallium and nitrogen containing crystalline material, the laser cavity being characterized by a length extending from a first end to a second opposite end; providing a first facet on the first end; and providing a second facet on the second end; wherein the length of the laser cavity is along a direction that is at an angle measured in degrees from a [0001] direction of the gallium and nitrogen containing crystalline material; and wherein the length of the laser cavity is at an angle of between about 0.3 degrees to about 30 degrees or between about −
0.3 degrees to about −
30 degrees from a [0001] direction of the gallium and nitrogen containing crystalline material. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification