Resources Contact Us Home
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
Memory component and memory device
Managing personal information on a network
Compositions for inhibiting NADPH oxidase activity
Triazole derivatives as ghrelin analogue ligands of growth hormone secretagogue receptors
Synchronization scheduling apparatus and method in real-time multi-core system
Synchronization of communication equipment
Control system for an internal combustion engine
  Randomly Featured Patents
Automated system and method for checkless check transaction
Vacuum insulated panel and method of forming a vacuum insulated panel
Semiconductor light emitting device and method for producing the same
High HC reference layer structure for self-pinned GMR heads
Tool holder support assembly
Automatic gearbox with a hydraulically actuated shifting element
Measuring tool and method of making
Process for producing colloidal borosilicates
Compositions and methods for the therapy and diagnosis of lung cancer