Resources Contact Us Home
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 and compositions for improving photodynamic therapy through administration of lipids
High frequency vertical spring probe
Structure of pixel electrode
Method and apparatus for establishing a media clip
Simulating non power of two texture behavior
Hybrid asynchronous transmission process
Qualification screening system and screening method thereof, qualification screening device and device under qualification screening
  Randomly Featured Patents
Light beam scanning device and control method therefor
High affinity humanized anti-TAG-72 monoclonal antibodies
Concrete rail tie
Apparatus for recording and/or reproducing, in successive slant tracks on a record tape, at least an audio signal and an index signal for controlling tape transport
Method for making a computer system implementing a cryptographic algorithm secure using Boolean operations and arithmetic operations and a corresponding embedded system
Optical information recording/reproducing apparatus having tilt correction mechanism and method therefor
Electrical heater of an electrical smoking system
Corrosion inhibitors, method of producing them and protective coatings containing them
Use of mycrobacterial vaccines in CD4.sup.+ or CD8.sup.+ lymphocyte-deficient mammals
Water skis and oaring sticks