New AOTF Technology for IR Hyperspectral Imaging

Abstract

We have developed a new Acousto-Optic Tunable Filter (AOTF) for implementation as a spectrally selective element for hyperspectral imaging applications in the NIR (.8 - 1.7 micron) and MWIR (2.5 - 4.5 micron) ranges of the optical spectrum. The new AOTF has high spectral resolution (about 3/cm) and requires relatively low RF drive power. It has a broad acceptance angle and increased diffraction efficiency for enhanced optical throughput. In combination with a 2-D IR focal plane array the new AOTF allows for real time hyperspectral imaging of both self-emitting sources, such as astronomical objects or rocket exhaust plumes, and externally illuminated absorbing/reflecting specimens.

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Document Details

Document Type
Technical Report
Publication Date
Mar 03, 1998
Accession Number
ADA399433

Entities

People

  • Duane E. Paulsen
  • Vladimir Pelekhaty
  • Xiaolu Wang

Tags

Communities of Interest

  • Advanced Electronics
  • Sensors

DTIC Thesaurus Topics

  • Acoustic Waves
  • Arrays
  • Diffraction
  • Efficiency
  • Figure Of Merit
  • Filtration
  • Focal Plane Arrays
  • Focal Planes
  • Frequency
  • High Resolution
  • Hyperspectral Imagery
  • Lithium Niobates
  • Piezoceramics
  • Piezoelectric Transducers
  • Refractive Index
  • Spectra
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Image Processing and Computer Vision.
  • Optical Physics and Photonics.