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
Discovery, analysis, and visualization of dependencies
Vacuum switch and electrode assembly therefor
System and method for removing oxide from a sensor clip assembly
Method of purifying crude acetone stream
System and methods for obstacle mapping and navigation
Touchscreen with extended conductive pattern
Powder for layerwise manufacturing of objects
  Randomly Featured Patents
Full-duplex radio frequency echo cancellation
Geranium plant named `Fisboogy`
Apparatus for producing a crimp-bonded fibrous cellulosic laminate
Foamable composition using high density polyethylene
Back support for seat
Integrated motor and blower apparatus having two back-to-back coupled rotors
Chemical vapor deposition of metal oxides
Liquid level indicating apparatus
Method of selectable simultaneous/sequential motor drive in a multiple drive circuit including failure detection
Capped poly(arylene ether) composition and method