Fast, real-time spectrometer based on a pulsed quantum-cascade laser

E. Normand, M. McCulloch, G. Duxbury, N. Langford

Research output: Contribution to journal › Article

97 Citations (Scopus)

Abstract

We describe a mid-infrared spectrometer that is based on the combination of a multiple-pass absorption cell and a submicrosecond pulsed quantum-cascade laser. The spectrometer is capable of both making sensitive measurements and providing a real-time display of the spectral fingerprint of molecular vapors. For a cell with a path length of 9.6 m, dilution measurements made of the v_9 band transitions of 1,1-difluoroethylene indicate a sensitivity of 500 parts in 10^9, corresponding to a fractional absorbance of 4 × 10^-4 .
Original languageEnglish
Pages (from-to)16-18
Number of pages2
JournalOptics Letters
Volume28
Issue number1
Publication statusPublished - Jan 2003

Fingerprint

quantum cascade lasers
pulsed lasers
spectrometers
infrared spectrometers
cells
dilution
vapors
sensitivity

Keywords

  • spectrometer
  • quantum physics
  • lasers
  • molecular vapours
  • optics

Cite this

Normand, E., McCulloch, M., Duxbury, G., & Langford, N. (2003). Fast, real-time spectrometer based on a pulsed quantum-cascade laser. Optics Letters, 28(1), 16-18.
Normand, E. ; McCulloch, M. ; Duxbury, G. ; Langford, N. / Fast, real-time spectrometer based on a pulsed quantum-cascade laser. In: Optics Letters. 2003 ; Vol. 28, No. 1. pp. 16-18.
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Normand, E, McCulloch, M, Duxbury, G & Langford, N 2003, 'Fast, real-time spectrometer based on a pulsed quantum-cascade laser', Optics Letters, vol. 28, no. 1, pp. 16-18.

Fast, real-time spectrometer based on a pulsed quantum-cascade laser. / Normand, E.; McCulloch, M.; Duxbury, G.; Langford, N.

In: Optics Letters, Vol. 28, No. 1, 01.2003, p. 16-18.

Research output: Contribution to journal › Article

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T1 - Fast, real-time spectrometer based on a pulsed quantum-cascade laser

AU - Normand, E.

AU - McCulloch, M.

AU - Duxbury, G.

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N2 - We describe a mid-infrared spectrometer that is based on the combination of a multiple-pass absorption cell and a submicrosecond pulsed quantum-cascade laser. The spectrometer is capable of both making sensitive measurements and providing a real-time display of the spectral fingerprint of molecular vapors. For a cell with a path length of 9.6 m, dilution measurements made of the v_9 band transitions of 1,1-difluoroethylene indicate a sensitivity of 500 parts in 10^9, corresponding to a fractional absorbance of 4 × 10^-4 .

AB - We describe a mid-infrared spectrometer that is based on the combination of a multiple-pass absorption cell and a submicrosecond pulsed quantum-cascade laser. The spectrometer is capable of both making sensitive measurements and providing a real-time display of the spectral fingerprint of molecular vapors. For a cell with a path length of 9.6 m, dilution measurements made of the v_9 band transitions of 1,1-difluoroethylene indicate a sensitivity of 500 parts in 10^9, corresponding to a fractional absorbance of 4 × 10^-4 .

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KW - quantum physics

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KW - molecular vapours

KW - optics

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Normand E, McCulloch M, Duxbury G, Langford N. Fast, real-time spectrometer based on a pulsed quantum-cascade laser. Optics Letters. 2003 Jan;28(1):16-18.

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