Resources Contact Us Home
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
Method of making a low-Rdson vertical power MOSFET device
Encoder that optically detects positional information of a moving body from different optical paths lengths
Redistribution layer (RDL) with variable offset bumps
Method and device for determining processed image data about a surround field of a vehicle
Method and computed tomography device and data storage medium for performing a dynamic CT examination on a patient
Signal conversion control circuit for touch screen and method thereof
Display window with level of service graphical user interface
  Randomly Featured Patents
Direct conversion energy discriminating CT detector
Apparatus for dispensing a deformable and flowable filling material
Method and system for synchronization character location and prediction in a data storage system
Pipework for sprinkler systems
Card connector anti-misinserting a micro SD card
Hand held mouthpiece visualizer for interior embouchure
9-aminomethyl substituted minocycline compounds
Device for biostimulation of tissue and method for treatment of tissue
Block fixation and adjustment in a continuous caster
System for flue gas purification and method for introducing a purifying agent