Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Electrically pumped edge-emitting photonic bandgap semiconductor laser










Image Number 5 for United States Patent #6674778.

A highly efficient, electrically pumped edge-emitting semiconductor laser based on a one- or two-dimensional photonic bandgap (PBG) structure is described. The laser optical cavity is formed using a pair of PBG mirrors operating in the photonic band gap regime. Transverse confinement is achieved by surrounding an active semiconductor layer of high refractive index with lower-index cladding layers. The cladding layers can be electrically insulating in the passive PBG mirror and waveguide regions with a small conducting aperture for efficient channeling of the injection pump current into the active region. The active layer can comprise a quantum well structure. The quantum well structure can be relaxed in the passive regions to provide efficient extraction of laser light from the active region.








 
 
  Recently Added Patents
Mechanism to manage access to user data area with bridged direct-attached storage devices
Elastin protective polyphenolics and methods of using the same
Wearable electronic display
Method for delivering a fluid to a patient
Hydraulic variator control arrangement
Method of relaying data
Orthopedic implant system
  Randomly Featured Patents
Electron beam exposure system and an apparatus for carrying out the same
Computer generated control panel for a computer monitor
Real-time window/leveling on a radiographic workstation
Superscalar microprocessor including a high speed instruction alignment unit
Method of procedures linkage control
Air guide housing
Process for preparing joint, spackling and texture compounds for gypsum dry walls
Crosslinkable composition and molded article made of same
Network firewall policy configuration facilitation
Low ratio yarn package treatment apparatus and method