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
Bipolar transistor with diffused layer between deep trench sidewall and collector diffused layer
Probiotic enriched and low organic acid food products
Method and apparatus for analysis of histopathology images and its application to cancer diagnosis and grading
Hydrogen generation device and fuel cell system
Methods of measuring cell viability in tissue engineered products
Virtual multi-cluster clouds
Sending targeted product offerings based on personal information
  Randomly Featured Patents
Kitchen faucet spout
Holder for paper rolls
Method of mixing viscous emulsions
Driving apparatus for display device
Digital filters and demodulators
Integrated memory with two burst operation types
Spatial-temporal multiplexing for high bit-depth resolution displays
Apparatus for dispensing fabric from a bolt
Sensory monitor with embedded messaging element
Method and system for decoding N-tuple variable length code