1. Patents by Inventor Arsam Antreasyan
Ridge waveguide semiconductor laser with thin active region
Patent number: 5309465
Abstract: The present invention provides an improved semiconductor ridge waveguide
laser structure having a plurality of layers including an N-InP buffer layer and an N-type
InP substrate, a thin InGaAsP active layer 1100 Angstroms thickness, a P-InP graded
layer, an optional etch stop layer, a P-InP cladding layer and a P+InGaAs. The ridge
waveguide laser of the present invention demonstrates a very high reliability and the
fabrication process therefor is high yield. The ridge waveguide laser of the present
invention demonstrates very good high temperature behavior and the design suppresses
higher order modes.
Type: Grant
Filed: November 5, 1992
Issued: May 3, 1994
Assignee: International Business Machines Corporation
Inventors: Arsam Antreasyan, Greg Costrini, Peter D. Hoh
Waveguide ridge laser device with improved mounting and ridge protection
Patent number: 5305340
Abstract: A protection configuration for a semiconductor ridge waveguide laser structure
is disclosed wherein layers of protective metal in the form of walls, is applied on each
side of the ridge element of the ridged layer of the laser structure. The laser structure is
then bonded to a mounting plate in a junction side down orientation by solder or a
junction side up orientation by wire bonding. The metal layer may be composed of gold.
Type: Grant
Filed: December 16, 1992
Issued: April 19, 1994
Assignee: International Business Machines Corporation
Inventors: Arsam Antreasyan, Myra N. Boenke, Greg Costrini, Kurt R. Grebe, Christoph
Harder, Peter D. Hoh
Group III-V compound field effect transistor with diffusion barrier
Patent number: 4873558
Abstract: Group III-V compound MISFETs include a low-doped diffusion barrier layer
disposed between a source/drain contact-facilitating layer and the channel layer.
Type: Grant
Filed: February 23, 1988
Issued: October 10, 1989
Assignee: American Telephone and Telegraph Company, AT&T Bell Laboratories
Inventors: Arsam Antreasyan, Paul A. Garbinski, Vincent D. Mattera, Jr., Henryk
Temkin