Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Semiconductor laser device










Image Number 2 for United States Patent #5010375.

A semiconductor laser device include a Si substrate, a current confinement layer having an aperture disposed on the substrate, compound semiconductor layers disposed on the current confinement layer and on the Si substrate at the aperture of the current confinement layer, and a buffer layer for relieving the stress caused by the difference in lattice constants disposed between the Si substrate and the compound semiconductor layers. The Si substrate is of a first conductivity type and the current confinement layer is of a second conductivity type, or the current confinement layer comprises a compound semiconductor while the substrate comprises Si. The aperture of the current confinement layer is produced by anodic oxidation and selective etching of the current confinement layer. Therefore, a good re-growth interface at the substrate is obtained. There are no problems from residual oxides at the surface of the substrate, of Si or p type impurities diffusing out of the surface of the substrate, or of non-uniform thermal etching during the subsequent crystal growth processes.








 
 
  Recently Added Patents
Peer to peer (P2P) missing fields and field valuation feedback
Assisting apparatus, method, and program for checking crosstalk noise between hierarchized modules in a semiconductor circuit
Reference circuit with curvature correction using additional complementary to temperature component
Bottle
Address generation unit for accessing a multi-dimensional data structure in a desired pattern
Methods for determining decoding order in a MIMO system with successive interference cancellation
Techniques for data assignment from an external distributed file system to a database management system
  Randomly Featured Patents
Die cast housing for welding machine generator
Preparation of chiral 1,2,3,4-tetrahydro-6,7-dialkoxy-3-isoquinolinecarboxylic acid and derivatives
Conveying system
Method for the chemical decontamination of metallic parts of a nuclear reactor
Tilt compensation method and apparatus therefor
Audio device and playback program for the same
Self-scanning photo-sensitive circuits
Iron
N,N-Dialkylureidomethane diphosphonic acid and its preparation
Reciprocating screw injection molding machine with hydraulic actuating mechanism with prefill valve