Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Chiral laser apparatus and method










Image Number 5 for United States Patent #6404789.

A chiral laser apparatus comprises a layered structure configured to produce a photonic stop band, the layered structure including a upper chiral material layer, a middle excitable light-emitting layer, and a lower chiral material layer and an excitation source that, when applied to the layered structure, causes the middle light-emitting layer to emit electromagnetic radiation, such that polarized lasing at a lasing wavelength occurs in a direction perpendicular to the layered structure. The middle light-emitting layer may be configured to produce a defect such that lasing advantageously occurs at a wavelength corresponding to a localized photonic state within the photonic stop band. The excitation source may be an electrical power source connected to the layered structure via two or more electrodes. In another embodiment of the invention, the layered structure is replaced with a homogeneous chiral material doped with a light-emitting material. Excitation sufficient to cause lasing is provided by the electrical power source via a pair of electrodes connected to the chiral material. In yet another embodiment of the invention, the excitation source may be an electromagnetic wave source that applies an electromagnetic wave to the middle light-emitting layer to excite the middle layer sufficiently to cause lasing.








 
 
  Recently Added Patents
Methods of operating non-volatile memory devices during write operation interruption, non-volatile memory devices, memories and electronic systems operating the same
Inhibitor of casein kinase 1delta and casein kinase 1E
Cathode material for lithium ion secondary battery and lithium ion secondary battery using it
Computer server capable of supporting CPU virtualization
Method and system for accomplishing user equipment purge
Vaccination with killed but metabolically active (KBMA) protozoans with toll-like receptor agonists
Rate controlled first in first out (FIFO) queues for clock domain crossing
  Randomly Featured Patents
Road construction machine, leveling device, as well as method for controlling the milling depth or milling slope in a road construction machine
Apparatus for implanting hair
Accurate scan-mode voltage detection circuit
Distance measuring unit for an automatic focusing camera
Interwoven hammock bed
Rudder post tube assembly
Organosilicon compositions prepared from unsaturated elastomeric polymers
Automobile bumper constructed of fused resin members
Paper bag opening device
Radio controlled vehicle with a system for selectively lifting portions of the vehicle frame