Resources Contact Us Home
Optical scheme for holographic imaging of complex diffractive elements in materials

Image Number 3 for United States Patent #6297894.

This invention discloses optical system and method for writing a refractive index pattern in a light transmissive or light absorbing sample. A light source for providing a short pulse laser beam in the femtosecond range having a low power per unit area is coupled to provide the short pulse beam to a diffractive optical element. A curved mirror collects light transmitted through or reflected from the diffractive optical element preserves an image relating to characteristics of the diffractive optical element encoded within the collected light, and directs the collected light in wavelength independent manner while preserving the image of the diffractive optical element encoded within the collected light. A rod lens demagnifies the image within the light received from the curved mirror so as to increase its power per unit area when directed to the light transmissive or absorbing sample to be permanently impressed therein.

  Recently Added Patents
Semiconductor device
Methods of enhancing diabetes resolution
Continuous geospatial tracking system and method
Electrical stimulation lead, system, and method
Clothing fastener accessory
Combined high and low frequency stimulation therapy
Anti-FGFR3 antibodies and methods using same
  Randomly Featured Patents
Method and apparatus for making two-piece beverage can components
Method of producing ceramic material for zinc oxide varistors
Thermosetting compositions, methods of coating and coated articles
Cooling fan with reinforced blade
Communication management system, communication management method, and communication control device
Method of depositing diamond and diamond light emitting device
Implantable prosthetic vascular device having an adherent cell monolayer produced under shear stress
Method and system for providing an extensible user interface
Apparatus and process for reacting over two catalyst beds
Oil recovery prediction technique