Resources Contact Us Home
Vertical cavity surface emitting laser

Image Number 16 for United States Patent #8077752.

A Vertical Cavity Surface Emitting Laser (VCSEL) capable of providing high output of fundamental transverse mode while preventing oscillation of high-order transverse mode is provided. The VCSEL includes a semiconductor layer including an active layer and a current confinement layer, and a transverse mode adjustment section formed on the semiconductor layer. The current confinement layer has a current injection region and a current confinement region. The transverse mode adjustment section has a high reflectance area and a low reflectance area. The high reflectance area is formed in a region including a first opposed region opposing to a center point of the current injection region. A center point of the high reflectance area is arranged in a region different from the first opposed region. The low reflectance area is formed in a region where the high reflectance area is not formed, in an opposed region opposing to the current injection region.

  Recently Added Patents
Post-processing including median filtering of noise suppression gains
Aluminum galvanic cell
System and method for deposition in high aspect ratio magnetic writer heads
Respirator belt having bumper cushion
Electrical converter with variable capacitor
Case for a tablet computer
Wind turbine
  Randomly Featured Patents
Low-lead leaching foamed concrete bullet barrier
Object verification apparatus and method
Phenoxyalkyl-substituted heteroaromatics and their use for controlling pests
Milling cutter
In-line bottling plant
Expandable cages for embolic filtering devices
Gradual release structures for chewing gum
Flexible lattice-like grid structure etched from a metallic foil
Process for the production of substituted polyaryl ethers
Interface apparatus for SDH/SONET interconnection