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
Methods and kits for predicting the responsiveness of hepatocellular carcinoma patients to 5-fluorouracil-based combination chemotherapy
Weighted determination in configuration management systems
Biphotonic photosensitizers, nanoparticles containing the same and their use as drugs
Handheld electronic device with text disambiguation employing advanced editing feature
Light emitting diode having multi-cell structure and method of manufacturing the same
Light irradiation element, image forming structure, and image forming apparatus
Decentralized processing network
  Randomly Featured Patents
System and method of distributed computing using embedded processors
Communications system
Overlaying spread spectrum CDMA personal communications system
System to calibrate on-die temperature sensor
Combined collapsible cup, compass and altimeter
Correlation apparatus
Contact lenses of high water content
Disposable bib having tape-tab fastener
Method for manufacturing a soft magnetic powder material
Threaded fastener