Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Submersible remote smoke sensor
Compositions and methods for concentrating and depleting microorganisms
Eyeglasses
Microporous membranes and methods for producing and using such membranes
Programming of DIMM termination resistance values
Systems and methods for determining muscle force through dynamic gain optimization of a muscle PID controller for designing a replacement prosthetic joint
Composite high reflectivity layer
  Randomly Featured Patents
Low voltage electrical assembly
Baffle assembly for a heat exchanger tube
Production of mushroom spawn
Data generating device, scanner and non-transitory computer readable medium
Method and arrangement for concealing errors
Olefins etherification and conversion to liquid fuels with paraffins dehydrogenation
Spoke for a vehicle wheel
Method and apparatus for forming food clusters
Dual paddlewheel flow sensor
Inclined rail trolley safety device with lever operated cable shieve for taking up slack in the cable to control trolley drive