Laser diode assembly
First Claim
Patent Images
1. A laser diode assembly comprising:
- a housing having a housing part and a mounting part that is connected to the housing part and that extends away from the housing part along an extension direction;
a laser diode chip disposed on the mounting part, the laser diode chip having semiconductor layers on a substrate, wherein the semiconductor layers include an active layer for emitting light, wherein the laser diode chip is based on a nitride compound semiconductor material;
a first solder layer arranged between the laser diode chip and the mounting part, the first solder layer having a thickness of greater than or equal to 3 μ
m; and
a crystalline protective layer located on a radiation coupling out area of the laser diode chip.
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Abstract
A laser diode assembly includes a housing having a housing part and a mounting part that is connected to the housing part and that extends away from the housing part along an extension direction. A laser diode chip is disposed on the mounting part. The laser diode chip has, on a substrate, semiconductor layers with an active layer for emitting light. The housing part and the mounting part have a main body composed of copper and at least the housing part is steel-sheathed. A first solder layer having a thickness of greater than or equal to 3 μm is arranged between the laser diode chip and the mounting part.
34 Citations
16 Claims
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1. A laser diode assembly comprising:
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a housing having a housing part and a mounting part that is connected to the housing part and that extends away from the housing part along an extension direction; a laser diode chip disposed on the mounting part, the laser diode chip having semiconductor layers on a substrate, wherein the semiconductor layers include an active layer for emitting light, wherein the laser diode chip is based on a nitride compound semiconductor material; a first solder layer arranged between the laser diode chip and the mounting part, the first solder layer having a thickness of greater than or equal to 3 μ
m; anda crystalline protective layer located on a radiation coupling out area of the laser diode chip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A laser diode assembly comprising:
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a housing having a housing part and a mounting part that is connected to the housing part and that extends away from the housing part along an extension direction; a laser diode chip disposed on the mounting part, the laser diode chip having semiconductor layers on a substrate, the semiconductor layers including an active layer for emitting light, wherein the laser diode chip is based on a nitride compound semiconductor material and has a non-polar or semi-polar crystal structure; and a first solder layer arranged between the laser diode chip and the mounting part, the first solder layer having a thickness of greater than or equal to 3 μ
m, wherein, during operation, the laser diode chip has a higher power loss in layers on that side of the active layer which faces away from the substrate and a lower power loss in the active layer, than a laser diode chip that is based on a nitride compound semiconductor material and has a polar crystal structure.
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16. A laser diode assembly comprising:
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a housing having a housing part and a mounting part that is connected to the housing part and that extends away from the housing part along an extension direction; a laser diode chip disposed on the mounting part, the laser diode chip having semiconductor layers on a substrate, wherein the semiconductor layers include an active layer for emitting light, wherein the laser diode chip is based on a nitride compound semiconductor material; and a first solder layer arranged between the laser diode chip and the mounting part, wherein the housing part and the mounting part have a main body composed of copper, and wherein the housing part is steel coated.
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Specification