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
Relative pose estimation of non-overlapping cameras using the motion of subjects in the camera fields of view
Systems and methods to provide report part via a web service
Methods and apparatus for dynamic identification (ID) assignment in wireless networks
Carrying case
Crosslinked core/shell polymer particles
Encoding digital content based on models for predicting similarity between exemplars
Electronic multiparty accounts receivable and accounts payable system
  Randomly Featured Patents
Enhanced visibility traffic signal
Thermoplastic film for airbag covers
Bacillus thuringiensis isolate active against hymenopteran pests and gene(s) encoding hymenopteran-active toxins
Self-degrading cement compositions and associated fluid loss applications
Parallel high-performance liquid chromatography with serial injection
Lampshade of a table lamp
Voltage sensor for high-current junction
Image projection apparatus for adjusting white balance in consideration of level of light emitted from LED and method thereof
Method of semiconductor packaging and/or a semiconductor package
Content addressable memory (CAM) devices having dedicated mask cell sub-arrays therein and methods of operating same