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Dispersion multiplexing with broadband filtering for miniature spectrometers.

Publication ,  Journal Article
Cull, EC; Gehm, ME; Brady, DJ; Hsieh, CR; Momtahan, O; Adibi, A
Published in: Applied optics
January 2007

We replace the traditional grating used in a dispersive spectrometer with a multiplex holographic grating to increase the spectral range sensed by the instrument. The multiplexed grating allows us to measure three different, overlapping spectral bands on a color digital focal plane. The detector's broadband color filters, along with a computational inversion algorithm, let us disambiguate measurements made from the three bands. The overlapping spectral bands allow us to measure a greater spectral bandwidth than a traditional spectrometer with the same sized detector. Additionally, our spectrometer uses a static coded aperture mask in the place of a slit. The aperture mask allows increased light throughput, offsetting the photon loss at the broadband filters. We present our proof-of-concept dispersion multiplexing spectrometer design with experimental measurements to verify its operation.

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Published In

Applied optics

DOI

EISSN

1539-4522

ISSN

1559-128X

Publication Date

January 2007

Volume

46

Issue

3

Start / End Page

365 / 374

Related Subject Headings

  • Spectrophotometry
  • Spectrometry, Fluorescence
  • Refractometry
  • Photons
  • Pattern Recognition, Automated
  • Optics
  • Models, Statistical
  • Light
  • Image Interpretation, Computer-Assisted
  • Filtration
 

Citation

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Cull, E. C., Gehm, M. E., Brady, D. J., Hsieh, C. R., Momtahan, O., & Adibi, A. (2007). Dispersion multiplexing with broadband filtering for miniature spectrometers. Applied Optics, 46(3), 365–374. https://doi.org/10.1364/ao.46.000365
Cull, E. C., M. E. Gehm, D. J. Brady, C. R. Hsieh, O. Momtahan, and A. Adibi. “Dispersion multiplexing with broadband filtering for miniature spectrometers.Applied Optics 46, no. 3 (January 2007): 365–74. https://doi.org/10.1364/ao.46.000365.
Cull EC, Gehm ME, Brady DJ, Hsieh CR, Momtahan O, Adibi A. Dispersion multiplexing with broadband filtering for miniature spectrometers. Applied optics. 2007 Jan;46(3):365–74.
Cull, E. C., et al. “Dispersion multiplexing with broadband filtering for miniature spectrometers.Applied Optics, vol. 46, no. 3, Jan. 2007, pp. 365–74. Epmc, doi:10.1364/ao.46.000365.
Cull EC, Gehm ME, Brady DJ, Hsieh CR, Momtahan O, Adibi A. Dispersion multiplexing with broadband filtering for miniature spectrometers. Applied optics. 2007 Jan;46(3):365–374.

Published In

Applied optics

DOI

EISSN

1539-4522

ISSN

1559-128X

Publication Date

January 2007

Volume

46

Issue

3

Start / End Page

365 / 374

Related Subject Headings

  • Spectrophotometry
  • Spectrometry, Fluorescence
  • Refractometry
  • Photons
  • Pattern Recognition, Automated
  • Optics
  • Models, Statistical
  • Light
  • Image Interpretation, Computer-Assisted
  • Filtration