Ultraviolet/visible light emitting vertical cavity surface emitting laser and method of fabrication
First Claim
Patent Images
1. A vertical cavity surface emitting laser comprising:
- a metallic supporting substrate having a surface;
a first buffer layer disposed on the surface of the metallic supporting substrate;
a first distributed Bragg reflector disposed on the first buffer layer, capable of serving as a second buffer layer, the first distributed Bragg reflector including pairs of alternating layers;
a first contact layer disposed on the first distributed Bragg reflector, a first cladding region disposed on the first contact layer, an active region disposed on the first cladding region, a second cladding region disposed on the active region, and a second contact layer disposed on the second cladding region; and
a second distributed Bragg reflector disposed on the second contact layer.
4 Assignments
0 Petitions
Accused Products
Abstract
An ultraviolet/blue/green vertical cavity surface emitting laser (VCSEL) for use in high density data storage that includes the fabrication of a VCSEL structure on a metallic single crystal substrate. The metallic single crystal substrate is utilized as a back reflecting mirror that in conjunction with an aluminum gallium nitride/gallium nitride distributed Bragg reflector serves to increase the overall reflectance of the VCSEL device. The metallic substrate is fabricated of a material such as nickel aluminum, thereby achieving an improved lattice match to the included III-nitride materials.
-
Citations
30 Claims
-
1. A vertical cavity surface emitting laser comprising:
-
a metallic supporting substrate having a surface; a first buffer layer disposed on the surface of the metallic supporting substrate; a first distributed Bragg reflector disposed on the first buffer layer, capable of serving as a second buffer layer, the first distributed Bragg reflector including pairs of alternating layers; a first contact layer disposed on the first distributed Bragg reflector, a first cladding region disposed on the first contact layer, an active region disposed on the first cladding region, a second cladding region disposed on the active region, and a second contact layer disposed on the second cladding region; and a second distributed Bragg reflector disposed on the second contact layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A vertical cavity surface emitting laser comprising:
-
a metallic supporting substrate having a surface; a buffer layer disposed on the surface of the metallic supporting substrate, the buffer layer including a plurality of layers of an aluminum nitride material; a first distributed Bragg reflector disposed on the surface of the buffer layer, the first distributed Bragg reflector having pairs of alternating layers with a first layer in each pair including a n-doped gallium nitride material and a second layer in each pair including an aluminum gallium nitride material; a first contact layer disposed on the first distributed Bragg reflector including a n-doped gallium nitride material; a first cladding region disposed on the first contact layer including a n-doped aluminum gallium nitride material; an active region disposed on the first cladding region, the active region having a quantum well layer, a first barrier layer and a second barrier layer with the quantum well layer positioned between the first barrier layer and the second barrier layer; a second cladding region disposed on the active region and including a p-doped aluminum gallium nitride material; a second contact layer disposed on the second cladding region and including a p-doped gallium nitride material; and a second distributed Bragg reflector disposed on the second contact layer, the second distributed Bragg reflector including pairs of alternating layers with each pair including a layer with a zinc oxide material and a layer with an aluminum oxide material. - View Dependent Claims (17, 18, 19)
-
-
20. A method of fabricating a vertical cavity surface emitting laser comprising the steps of:
-
providing a metallic supporting substrate having a surface; disposing a buffer layer on the surface of the metallic supporting substrate, forming the buffer layer to include a plurality of layers of an aluminum nitride material; disposing a first distributed Bragg reflector on the buffer layer, forming the first distributed Bragg reflector to include pairs of alternating layers, and positioning the pairs of alternating layers adjacent the buffer layer; disposing a first contact layer on the first distributed Bragg reflector, a first cladding region on the first contact layer, an active region on the first cladding region, a second cladding region on the active region and a second contact layer on the second cladding region; and disposing a second distributed Bragg reflector on the second contact layer. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
-
-
30. A method of fabricating a vertical cavity surface emitting laser comprising the steps of:
-
providing a nickel aluminum supporting substrate having a surface; disposing a buffer layer on the surface of the nickel aluminum supporting substrate, forming the buffer layer to include a plurality of layers of an aluminum nitride material; disposing a first distributed Bragg reflector on the buffer layer, forming the first distributed Bragg reflector to include pairs of alternating layers of a n-doped gallium nitride material and an aluminum gallium nitride material, and positioning the pairs of alternating layers adjacent the buffer layer; disposing a n-doped gallium nitride contact layer on the first distributed Bragg reflector, a n-doped aluminum gallium nitride cladding layer on the n-doped gallium nitride contact layer, an indium gallium nitride active layer on the n-doped aluminum gallium nitride cladding layer, a p-doped aluminum gallium nitride cladding layer on the indium gallium nitride active layer and a p-doped gallium nitride contact layer on the p-doped aluminum gallium nitride cladding layer; and disposing a second distributed Bragg reflector on the p-doped gallium nitride contact layer, forming the second distributed Bragg reflector to include pairs of alternating layers including a zinc oxide material and an aluminum oxide material, and positioning the pairs of alternating layers adjacent the p-doped gallium nitride contact layer.
-
Specification