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
Printing device, printing system, program, and printing method for printing based on print data from a user authorized to issue a print instruction for the print data
Method and system for dynamically representing distributed information
Ink composition, ink for inkjet recording and ink set using the ink
Vehicle hood
Cooling structure and cooling method for control rod drive mechanism and nuclear reactor
Developing device
VGPU: a real time GPU emulator
  Randomly Featured Patents
Detecting a data frame
High Viscosity pump sprayer utilizing fan spray nozzle
Apparatus for molding vehicle tires
Finishing process
Auxilliary window for industrial and commercial applications
Process for the preparation of tantalum/niobium hydroxides and oxides with a low fluoride content
Method and apparatus for manually selecting battery charging process
Electrode of a light-emitting device of the OLED type
Process for producing 1,3,5-trichlorobenzene
Electrical apparatus for vaporizing of active substances