A Snapshot Imaging Spectropolarimeter

Abstract

A revolutionary technique for snapshot imaging spectropolarimetry has been developed because of the recent availability of large focal plane arrays and fast computers. The technique involves the combination of spectropolarimetry with computed tomography imaging spectrometry (CTIS). This spectropolarimeter uses a modulation to encode the spectral dependence of all four Stokes parameters in a single spectrum. CTIS is a snapshot imaging spectrometry method in which both spatial and spectral information is reconstructed using the inverse mathematical technique of medical computed tomography. The combination of these techniques provides the basis for a snapshot imaging complete Stokes spectropolarimeter that can be implemented with no moving parts. This technique is being applied to the SWIR wavelength region to find targets that are camouflaged.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2001
Accession Number
ADA456796

Entities

People

  • A. M. Locke
  • D. S. Sabatke
  • D. Sass
  • E. L. Dereniak
  • J. P. Garcia
  • J. White
  • M. R. Descour
  • R. Sampson
  • Samantha N. Hoffman

Organizations

  • Tank-automotive and Armaments Command

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical

DTIC Thesaurus Topics

  • Bandwidth
  • Detectors
  • Focal Plane Arrays
  • Focal Planes
  • Four Dimensional
  • Frequency
  • Infrared Spectra
  • Materials
  • Polarization
  • Polarizers
  • Spectra
  • Spectrometers
  • Spectrometry
  • Spectropolarimeters
  • Three Dimensional
  • Tomography
  • X-Ray Computed Tomography

Fields of Study

  • Physics

Readers

  • Image Processing and Computer Vision.