Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Method of sending CTI messages in a communication system
Semiconductor arrangement with a solder resist layer
Constant low-flow air source control system and method
Film, polarizing plate and display device, and method of manufacturing film
Pressure washer
Systems of an electronic device and methods for manufacturing the same
Sub-LUN input/output profiling for SSD devices
  Randomly Featured Patents
Air turning assembly with self-gripping vanes
Absorbent soap-containing device
Interchangeable lens with double-sided printed circuit board
Method and devices for applying tape marking material on road surfaces
Quaternary modified acrylamide polymers
Substrate having a multiple metal protected conductive layer and method of manufacturing the same
Preventing loss of traced information in a data processing apparatus
Process for desulfurizing and blending naphtha
Method of combining two digital images
Process for preparation of electrophoresis