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
Methods and systems for representing missed approach information in perspective view on a cockpit display
Methods and apparatus for processing audio signals
Synergistic preparations based on mixtures of glycerol ether with aromatic alcohol for controlling mycobacteria
Cache memory control device, semiconductor integrated circuit, and cache memory control method
Copolymer for positive type lithography, polymerization initiator used in production of said copolymer, and composition for semiconductor lithography
Engineered enzymes with methionine-gamma-lyase enzymes and pharmacological preparations thereof
Female urine funnel
  Randomly Featured Patents
Electronic surveillance system employing the doppler effect
Call admission control for nonhomogenous sources
Operation control method for multistage regulated hydraulic machine
Process of making oriented film or structure
Bottle bagging apparatus
Apparatus for separating cylindrical pipes pushed into one another
Golf putter training apparatus
Modular electrical system
Apparatus and method for paging a user terminal in a satellite communication system
On-line consumer credit data reporting system