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 ν<sub>9</sub> band transitions of 1, 1-difluoroethylene indicate a sensitivity of 500 parts in 10<sup>9</sup>, corresponding to a fractional absorbance of 4×10<sup>-4</sup> .

© 2003 Optical Society of America

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  1. A. A. Kosterev and F. K. Tittel, IEEE J. Quantum Electron. 38, 582 (2002), and references therein.
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2002

A. A. Kosterev and F. K. Tittel, IEEE J. Quantum Electron. 38, 582 (2002), and references therein.

2001

E. Normand, G. Duxbury, and N. Langford, Opt. Commun. 197, 115 (2001).

2000

1998

Baillargeon, J. N.

Cai, S.

Capasso, F.

Cho, A. Y.

Duxbury, G.

E. Normand, G. Duxbury, and N. Langford, Opt. Commun. 197, 115 (2001).

E. Normand, N. Langford, and G. Duxbury, “Semiconductor diode laser arrangement,” UK patent application GB0208100.8 (April 9, 2002).

Faist, J.

Gmachl, C.

Hartman, J. S.

Hutchinson, A. L.

Kelly, J. F.

Kosterev, A. A.

A. A. Kosterev and F. K. Tittel, IEEE J. Quantum Electron. 38, 582 (2002), and references therein.

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).

Langford, N.

E. Normand, G. Duxbury, and N. Langford, Opt. Commun. 197, 115 (2001).

E. Normand, N. Langford, and G. Duxbury, “Semiconductor diode laser arrangement,” UK patent application GB0208100.8 (April 9, 2002).

Namjou, K.

Normand, E.

E. Normand, G. Duxbury, and N. Langford, Opt. Commun. 197, 115 (2001).

E. Normand, N. Langford, and G. Duxbury, “Semiconductor diode laser arrangement,” UK patent application GB0208100.8 (April 9, 2002).

Sharpe, S. W.

Sivco, D. L.

Tittel, F. K.

A. A. Kosterev and F. K. Tittel, IEEE J. Quantum Electron. 38, 582 (2002), and references therein.

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).

Whittaker, E. A.

Appl. Opt.

IEEE J. Quantum Electron.

A. A. Kosterev and F. K. Tittel, IEEE J. Quantum Electron. 38, 582 (2002), and references therein.

Opt. Commun.

E. Normand, G. Duxbury, and N. Langford, Opt. Commun. 197, 115 (2001).

Opt. Lett.

Other

E. Normand, N. Langford, and G. Duxbury, “Semiconductor diode laser arrangement,” UK patent application GB0208100.8 (April 9, 2002).

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