Longwave infrared (LWIR) coded aperture dispersive spectrometer.


Journal Article

We describe a static aperture-coded, dispersive longwave infrared (LWIR) spectrometer that uses a microbolometer array at the detector plane. The two-dimensional aperture code is based on a row-doubled Hadamard mask with transmissive and opaque openings. The independent column code nature of the matrix makes for a mathematically well-defined pattern that spatially and spectrally maps the source information to the detector plane. Post-processing techniques on the data provide spectral estimates of the source. Comparative experimental results between a slit and coded aperture for emission spectroscopy from a CO(2) laser are demonstrated.

Full Text

Duke Authors

Cited Authors

  • Fernandez, C; Guenther, BD; Gehm, ME; Brady, DJ; Sullivan, ME

Published Date

  • April 2007

Published In

Volume / Issue

  • 15 / 9

Start / End Page

  • 5742 - 5753

PubMed ID

  • 19532832

Pubmed Central ID

  • 19532832

Electronic International Standard Serial Number (EISSN)

  • 1094-4087

International Standard Serial Number (ISSN)

  • 1094-4087

Digital Object Identifier (DOI)

  • 10.1364/oe.15.005742


  • eng