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
Amplitude-shift-keying (ASK) envelope detector and demodulation circuits
Lateral double diffused metal oxide semiconductor device and method of manufacturing the same
Intake parameter-calculating device for internal combustion engine and method of calculating intake parameter
Methods of packaging imager devices and optics modules, and resulting assemblies
Method for producing SOI substrate and SOI substrate
Particle-loaded membrane for solid-phase-extraction and method for performing SALDI-MS analysis of an analyte
  Randomly Featured Patents
Front face of a floor mat
Fluorescence reference plate
Symmetrical data signal processing
Reactive fine particles
Laser peening for reducing hydrogen embrittlement
Transducer assembly for deep submergence
Power assisted toy flying device
Manufactured article for instantaneously making decorative bows and the like
Method for dewatering aggregate solid substrates by miscible liquid displacement
Intrinsically safe multi-drop communications link