Laser diodes with an etched facet and surface treatment
First Claim
Patent Images
1. A display device comprising:
- a laser diode device comprising;
a surface region bounded by edge regions including a first edge region; and
a laser stripe overlying a portion of the surface region, the laser stripe characterized by a length in a length direction and a width in a width direction, in the length direction the laser stripe includes a first end and a second end opposite the first end, the length direction being substantially orthogonal to the first edge region, and the width direction being substantially parallel to the first edge region;
wherein the laser stripe forms a ridge that protrudes outward from the surface region and is spaced on all sides from the edge regions by portions of the surface region;
wherein the first end of the laser stripe comprises a first facet, and the second end of the laser stripe comprises a second facet, the first facet having a primary emission surface, the first facet being substantially parallel to and recessed from the first edge region in the length direction;
wherein the laser stripe is operable to emit electromagnetic radiation in a wavelength range selected from a first range of about 400 nm to about 435 nm, a second range of about 435 nm to about 480 nm, a third range of about 480 nm to about 505 nm, and a fourth range of about 505 nm to about 550 nm, and wherein the first edge region comprises a first surface-treated region that includes a laser slag material and is configured to interact with the electromagnetic radiation emitted by the laser stripe; and
a package configured with the laser diode for the display device.
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Abstract
A gallium- and nitrogen-containing laser device including a facet with surface treatment to improve an optical beam is disclosed.
68 Citations
20 Claims
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1. A display device comprising:
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a laser diode device comprising; a surface region bounded by edge regions including a first edge region; and a laser stripe overlying a portion of the surface region, the laser stripe characterized by a length in a length direction and a width in a width direction, in the length direction the laser stripe includes a first end and a second end opposite the first end, the length direction being substantially orthogonal to the first edge region, and the width direction being substantially parallel to the first edge region; wherein the laser stripe forms a ridge that protrudes outward from the surface region and is spaced on all sides from the edge regions by portions of the surface region; wherein the first end of the laser stripe comprises a first facet, and the second end of the laser stripe comprises a second facet, the first facet having a primary emission surface, the first facet being substantially parallel to and recessed from the first edge region in the length direction; wherein the laser stripe is operable to emit electromagnetic radiation in a wavelength range selected from a first range of about 400 nm to about 435 nm, a second range of about 435 nm to about 480 nm, a third range of about 480 nm to about 505 nm, and a fourth range of about 505 nm to about 550 nm, and wherein the first edge region comprises a first surface-treated region that includes a laser slag material and is configured to interact with the electromagnetic radiation emitted by the laser stripe; and a package configured with the laser diode for the display device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A display device comprising:
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a laser diode device comprising; a surface region bounded by edge regions including a first edge region; and a laser stripe overlying a portion of the surface region, the laser stripe characterized by a length in a length direction and a width in a width direction, in the length direction the laser stripe includes a first end and a second end opposite the first end, the length direction being substantially orthogonal to the first edge region, and the width direction being substantially parallel to the first edge region wherein the laser stripe forms a ridge that protrudes outward from the surface region and is spaced on all sides from the edge regions by portions of the surface region; wherein the first end of the laser stripe comprises a first facet, and the second end of the laser stripe comprises a second facet, the first facet having a primary emission surface, the first facet being substantially parallel to and recessed from the first edge region in the length direction by a length ranging from about 0.5 μ
m to about 100 μ
m;wherein the laser stripe is operable to emit electromagnetic radiation at a wavelength ranging from about 425 nm to about 485 nm or from about 500 nm to about 550 nm, and wherein the first edge region comprises a first surface-treated region that includes a laser slag material and is configured to interact with the electromagnetic radiation emitted by the laser stripe, the first surface-treated region comprising one of a reflector, an absorber, or a scatterer; and a package configured with the laser diode device for the display device. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification