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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 28, Iss. 1 — Jan. 1, 2003
  • pp: 16–18

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

E. Normand, M. McCulloch, G. Duxbury, and N. Langford  »View Author Affiliations


Optics Letters, Vol. 28, Issue 1, pp. 16-18 (2003)
http://dx.doi.org/10.1364/OL.28.000016


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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 ν9 band transitions of 1, 1-difluoroethylene indicate a sensitivity of 500 parts in 109, corresponding to a fractional absorbance of 4×10-4 .

© 2003 Optical Society of America

OCIS Codes
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(300.6360) Spectroscopy : Spectroscopy, laser

Citation
E. Normand, M. McCulloch, G. Duxbury, and N. Langford, "Fast, real-time spectrometer based on a pulsed quantum-cascade laser," Opt. Lett. 28, 16-18 (2003)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-28-1-16


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References

  1. A. A. Kosterev and F. K. Tittel, IEEE J. Quantum Electron. 38, 582 (2002), and references therein.
  2. K. Namjou, S. Cai, E. A. Whittaker, J. Faist, C. Gmachl, F. Capasso, D. L. Sivco, and A. Y. Cho, Opt. Lett. 23, 219 (1998).
  3. A. A. Kosterev, F. K. Tittel, C. Gmachl, F. Capasso, D. L. Sivco, J. N. Baillargeon, A. L. Hutchinson, and A. Y. Cho, Appl. Opt. 39, 6866 (2000).
  4. E. Normand, G. Duxbury, and N. Langford, Opt. Commun. 197, 115 (2001).
  5. E. Normand, N. Langford, and G. Duxbury, “Semiconductor diode laser arrangement,” UK patent application GB0208100.8 (April 9, 2002).
  6. S. W. Sharpe, J. F. Kelly, J. S. Hartman, C. Gmachl, F. Capasso, D. L. Sivco, J. N. Baillargeon, and A. Y. Cho, Opt. Lett. 23, 1396 (1998).

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