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
Fire detector
Controller for internal combustion engine
Disk array apparatus and firmware update method therefor
Wristwatch
Anti-phishing system and method
Information repository search system
Pyroelectric detector, pyroelectric detection device, and electronic instrument
  Randomly Featured Patents
Antibodies for discrimination of prions
Method of dual EPI process for semiconductor device
Clamp-on current and voltage module for a power monitoring system
Magnetic toner
Combined musical christmas card and stocking holder
Hydrostatically actuated workholding apparatus with high expansion and recovery sleeve
Audio-enhanced sexual vibrator
Kneading paddle extraction device
Semiconductor device
Virtual network operations center