Resources Contact Us Home
Surface-emitting type semiconductor laser, and method for manufacturing the same, optical switch, and optical branching ratio variable element

Image Number 7 for United States Patent #7418014.

A surface-emitting type semiconductor laser includes a substrate, a first distributed Bragg reflection type mirror formed above the substrate, an active layer formed above the first mirror, a second distributed Bragg reflection type mirror formed above the active layer, and an insulation layer having an opening section that is formed in one of the first and second mirrors, wherein light generated from the active layer is emitted as a lower order mode laser beam lower order modeor a higher order mode laser beamhigher order mode, and the first mirror is formed with a number of pairs greater than the number of pairs of the second mirror such that the lower order mode laser beamlower order mode can be emitted in an upward direction of the substrate, and the opening section in the insulation layer is formed to have a size that enables the higher order mode laser beamhigher order mode to be emitted in a downward direction of the substrate.

  Recently Added Patents
Method and apparatus for disease diagnosis and screening using extremely low frequency electromagnetic fields
Preamplifier-to-channel communication in a storage device
Modified and stabilized GDF propeptides and uses thereof
Method and system for updating device management application meter read logic
Methods and system for providing drug pricing information from multiple pharmacy benefit managers (PBMs)
Sampling switch circuit that uses correlated level shifting
Authoring method, authoring device and program
  Randomly Featured Patents
Memory arbitration method and apparatus for multiple-cycle memory coprocessors employing a data cache unit and stack RAM
Electrical surface activated downhole circulating sub
Filter module and process for manufacture of same
Vulcanizing halogen-containing polymers
Configuring direction-based core based tree (CBT) for CBT-based overlay multicast
Catalytic combustion engines
Intake manifold for internal combustion engine
Toy vehicle
Flip chip thermally enhanced ball grid array
Combination blender and food washing apparatus