Patents Assigned to California Institute of Technolongy
  • Holographic filters for spectroscopic identification of substances
    Publication number: 20040021920
    Abstract: A method, system, and apparatus provide for the creation and use of a holographic filter. The holographic filter has multiple superpositioned holograms within a volume holographic medium. These superpositioned holograms synthesize a filter shape with multiple peaks at specified positions. The shape of the holographic filter matches a spectrum of a substance. The holographic filter may then be used (e.g., in a spectrometer) to simultaneously detect peaks in the spectrum of the matching substance.
    Type: Application
    Filed: July 25, 2003
    Publication date: February 5, 2004
    Applicant: California Institute of Technolongy
    Inventor: Demetri Psaltis