Surface emitting laser
First Claim
Patent Images
1. A surface emitting laser diode comprising:
- a semiconductor substrate having top and bottom surfaces;
a first plurality of alternating semiconductor mirror layers of differing refractive indicies formed upon said substrate;
a semiconductor active layer formed upon said first plurality of semiconductor layers, said active layer having a central region and a surrounding outer region, said active layer central region being of greater thickness than said active layer outer region, wherein said active layer central region has a top and a side surface and said active layer outer region has a top surface intersecting said active layer central region side;
a second plurality of said alternating semiconductor mirror layers formed upon said active central region top surface;
a current confinement layer formed upon said active layer central region side surface and a portion of said active layer outer region top surface immediate said active layer central region side surface;
first and second contacts respectively formed upon said substrate bottom surface and said active layer outer region top surface remote from said active layer central region side surface.
3 Assignments
0 Petitions
Accused Products
Abstract
A laser fabricated from a substrate having top and bottom surfaces. A first stack of mirror layers of alternating different refractive indices are formed upon the substrate top surface. An active layer defining a mesa is formed on top of the first stack of mirror layers. A second stack of alternating different refractive indices mirror layers are formed upon the active layer mesa. A current confinement layer is formed about the side of the active laser mesa. A first contact is formed upon the substrate bottom surface while a second contact is formed upon a portion of said active layer remote from the active layer mesa.
-
Citations
14 Claims
-
1. A surface emitting laser diode comprising:
-
a semiconductor substrate having top and bottom surfaces; a first plurality of alternating semiconductor mirror layers of differing refractive indicies formed upon said substrate; a semiconductor active layer formed upon said first plurality of semiconductor layers, said active layer having a central region and a surrounding outer region, said active layer central region being of greater thickness than said active layer outer region, wherein said active layer central region has a top and a side surface and said active layer outer region has a top surface intersecting said active layer central region side; a second plurality of said alternating semiconductor mirror layers formed upon said active central region top surface; a current confinement layer formed upon said active layer central region side surface and a portion of said active layer outer region top surface immediate said active layer central region side surface; first and second contacts respectively formed upon said substrate bottom surface and said active layer outer region top surface remote from said active layer central region side surface. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A surface emitting laser comprising:
-
a substrate having top and bottom surfaces; a first stack of mirror layers located upon said substrate top surface, said first stack layers of alternating indices of refraction; an active layer located upon said first stack, said active layer having a mesa extending above an adjacent base layer portion of said active layer; a second stack of mirror layers located upon a top surface of said mesa, said second stack layers of alternating indices of refraction; a current confinement layer located about said mesa and upon said adjacent base layer portion immediate said mesa; a first contact located upon said substrate bottom surface; and a second contact located upon said active layer adjacent to said base layer portion. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
-
Specification