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
Cis-alkoxy-substituted spirocyclic 1-H-pyrrolidine-2,4-dione derivatives
Buck converter having reduced ripple under a light load
Squib control circuit
Digital IF demodulator for video applications
Data communication apparatus, method of controlling the same, program, and storage medium
Apparatus and method for information processing, program, and recording medium
Subscribing to content
  Randomly Featured Patents
Methods of forming capacitors
Apparatus for controllably feeding a particulate material
Flexible compositions based on vinyl chloride polymers comprising poly-.epsilon.-caprolactone
Semiconductor device having a wiring layer of damascene structure and method for manufacturing the same
Sub-gate delay adjustment using digital locked-loop
Method and apparatus to perform improved retry in data storage system
Apparatus for printing on compressible material
Rotary shaft locking device and recording apparatus having the same
Ink cartridge for a printer
Convertible tool holder for a machine tool