Abstract

We present measurements of absorption spectra of hot-water vapor generated in a propane–air flame in the far-infrared region of the spectrum from 0.1 to 3.5  THz (3.3 to 117 cm-1). Transitions within the rotational manifold of both the ground and the ν2=1 vibrational levels were observed. The measurements are in good agreement with calculations of the predicted absorption spectra at 1300  K based on tabulated line intensities, whereas predicted theoretical line widths were found to be approximately one third too narrow.

© 1998 Optical Society of America

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1997

S. Viti, J. Tennyson, and O. L. Polyansky, Mon. Not. R. Astron. Soc. 287, 79 (1997).
[CrossRef]

O. L. Polyansky, N. F. Zobov, S. Viti, J. Tennyson, P. F. Bernath, and L. Wallace, Science 277, 346 (1997).
[CrossRef] [PubMed]

H. Harde, R. A. Cheville, and D. Grischkowsky, J. Phys. Chem. 101, 3646 (1997).
[CrossRef]

1996

O. L. Polyansky, J. R. Busler, B. Guo, K. Zhang, and P. F. Bernath, J. Mol. Spectrosc. 176, 305 (1996).
[CrossRef]

1995

L. Wallace, P. Bernath, W. Livingston, K. Hinkle, J. Busler, B. Guo, and K. Zhang, Science 268, 1155 (1995).
[CrossRef] [PubMed]

R. A. Cheville and D. Grischkowsky, Opt. Lett. 20, 1646 (1995).
[CrossRef] [PubMed]

1992

J.-Y. Mandin, V. Dana, C. Camy-Peyret, and J.-M. Flaud, J. Mol. Spectrosc. 152, 179 (1992).
[CrossRef]

1991

1989

1988

R. R. Gamache and L. S. Rothman, Mol. Phys. 128, 360 (1988).

1985

1977

C. Camy-Peyret, J. F. Flaud, J. P. Maillard, and G. Guelachvili, Mol. Phys. 33, 1641 (1977).
[CrossRef]

1976

J. M. Flaud, C. Camy-Peyret, and J. P. Maillard, Mol. Phys. 32, 499 (1976).
[CrossRef]

Bernath, P.

L. Wallace, P. Bernath, W. Livingston, K. Hinkle, J. Busler, B. Guo, and K. Zhang, Science 268, 1155 (1995).
[CrossRef] [PubMed]

Bernath, P. F.

O. L. Polyansky, N. F. Zobov, S. Viti, J. Tennyson, P. F. Bernath, and L. Wallace, Science 277, 346 (1997).
[CrossRef] [PubMed]

O. L. Polyansky, J. R. Busler, B. Guo, K. Zhang, and P. F. Bernath, J. Mol. Spectrosc. 176, 305 (1996).
[CrossRef]

Busler, J.

L. Wallace, P. Bernath, W. Livingston, K. Hinkle, J. Busler, B. Guo, and K. Zhang, Science 268, 1155 (1995).
[CrossRef] [PubMed]

Busler, J. R.

O. L. Polyansky, J. R. Busler, B. Guo, K. Zhang, and P. F. Bernath, J. Mol. Spectrosc. 176, 305 (1996).
[CrossRef]

Camy-Peyret, C.

J.-Y. Mandin, V. Dana, C. Camy-Peyret, and J.-M. Flaud, J. Mol. Spectrosc. 152, 179 (1992).
[CrossRef]

C. Camy-Peyret, J. F. Flaud, J. P. Maillard, and G. Guelachvili, Mol. Phys. 33, 1641 (1977).
[CrossRef]

J. M. Flaud, C. Camy-Peyret, and J. P. Maillard, Mol. Phys. 32, 499 (1976).
[CrossRef]

J. M. Flaud, C. Camy-Peyret, and R. A. Toth, Water Vapour Line Parameters from Microwave to Medium Infrared (Pergamon, Oxford, 1981).

Cheville, R. A.

H. Harde, R. A. Cheville, and D. Grischkowsky, J. Phys. Chem. 101, 3646 (1997).
[CrossRef]

R. A. Cheville and D. Grischkowsky, Opt. Lett. 20, 1646 (1995).
[CrossRef] [PubMed]

Dana, V.

J.-Y. Mandin, V. Dana, C. Camy-Peyret, and J.-M. Flaud, J. Mol. Spectrosc. 152, 179 (1992).
[CrossRef]

Delaye, C.

Devi, V. M.

Flaud, J. F.

C. Camy-Peyret, J. F. Flaud, J. P. Maillard, and G. Guelachvili, Mol. Phys. 33, 1641 (1977).
[CrossRef]

Flaud, J. M.

J. M. Flaud, C. Camy-Peyret, and J. P. Maillard, Mol. Phys. 32, 499 (1976).
[CrossRef]

J. M. Flaud, C. Camy-Peyret, and R. A. Toth, Water Vapour Line Parameters from Microwave to Medium Infrared (Pergamon, Oxford, 1981).

Flaud, J.-M.

J.-Y. Mandin, V. Dana, C. Camy-Peyret, and J.-M. Flaud, J. Mol. Spectrosc. 152, 179 (1992).
[CrossRef]

Gamache, R. R.

R. R. Gamache and L. S. Rothman, Mol. Phys. 128, 360 (1988).

Goldman, A.

Grischkowsky, D.

H. Harde, R. A. Cheville, and D. Grischkowsky, J. Phys. Chem. 101, 3646 (1997).
[CrossRef]

R. A. Cheville and D. Grischkowsky, Opt. Lett. 20, 1646 (1995).
[CrossRef] [PubMed]

Guelachvili, G.

C. Camy-Peyret, J. F. Flaud, J. P. Maillard, and G. Guelachvili, Mol. Phys. 33, 1641 (1977).
[CrossRef]

Guo, B.

O. L. Polyansky, J. R. Busler, B. Guo, K. Zhang, and P. F. Bernath, J. Mol. Spectrosc. 176, 305 (1996).
[CrossRef]

L. Wallace, P. Bernath, W. Livingston, K. Hinkle, J. Busler, B. Guo, and K. Zhang, Science 268, 1155 (1995).
[CrossRef] [PubMed]

Harde, H.

H. Harde, R. A. Cheville, and D. Grischkowsky, J. Phys. Chem. 101, 3646 (1997).
[CrossRef]

Hartmann, J.-M.

Hinkle, K.

L. Wallace, P. Bernath, W. Livingston, K. Hinkle, J. Busler, B. Guo, and K. Zhang, Science 268, 1155 (1995).
[CrossRef] [PubMed]

Livingston, W.

L. Wallace, P. Bernath, W. Livingston, K. Hinkle, J. Busler, B. Guo, and K. Zhang, Science 268, 1155 (1995).
[CrossRef] [PubMed]

Maillard, J. P.

C. Camy-Peyret, J. F. Flaud, J. P. Maillard, and G. Guelachvili, Mol. Phys. 33, 1641 (1977).
[CrossRef]

J. M. Flaud, C. Camy-Peyret, and J. P. Maillard, Mol. Phys. 32, 499 (1976).
[CrossRef]

Mandin, J.-Y.

J.-Y. Mandin, V. Dana, C. Camy-Peyret, and J.-M. Flaud, J. Mol. Spectrosc. 152, 179 (1992).
[CrossRef]

Minkoff, G. L.

G. L. Minkoff and C. F. H. Tipper, Chemistry of Combustion Reactions (Butterworth, London, 1962).

Pickett, H. M.

Polyansky, O. L.

S. Viti, J. Tennyson, and O. L. Polyansky, Mon. Not. R. Astron. Soc. 287, 79 (1997).
[CrossRef]

O. L. Polyansky, N. F. Zobov, S. Viti, J. Tennyson, P. F. Bernath, and L. Wallace, Science 277, 346 (1997).
[CrossRef] [PubMed]

O. L. Polyansky, J. R. Busler, B. Guo, K. Zhang, and P. F. Bernath, J. Mol. Spectrosc. 176, 305 (1996).
[CrossRef]

Poynter, R. L.

Rinsland, C. P.

Rothman, L. S.

R. R. Gamache and L. S. Rothman, Mol. Phys. 128, 360 (1988).

Schawlow, A. L.

C. H. Townes and A. L. Schawlow, Microwave Spectroscopy (Dover, New York, 1975).

Smith, M. A. H.

Taine, J.

Tennyson, J.

O. L. Polyansky, N. F. Zobov, S. Viti, J. Tennyson, P. F. Bernath, and L. Wallace, Science 277, 346 (1997).
[CrossRef] [PubMed]

S. Viti, J. Tennyson, and O. L. Polyansky, Mon. Not. R. Astron. Soc. 287, 79 (1997).
[CrossRef]

Tipper, C. F. H.

G. L. Minkoff and C. F. H. Tipper, Chemistry of Combustion Reactions (Butterworth, London, 1962).

Toth, R. A.

R. A. Toth, J. Opt. Soc. Am. B 8, 2236 (1991).
[CrossRef]

J. M. Flaud, C. Camy-Peyret, and R. A. Toth, Water Vapour Line Parameters from Microwave to Medium Infrared (Pergamon, Oxford, 1981).

Townes, C. H.

C. H. Townes and A. L. Schawlow, Microwave Spectroscopy (Dover, New York, 1975).

Viti, S.

O. L. Polyansky, N. F. Zobov, S. Viti, J. Tennyson, P. F. Bernath, and L. Wallace, Science 277, 346 (1997).
[CrossRef] [PubMed]

S. Viti, J. Tennyson, and O. L. Polyansky, Mon. Not. R. Astron. Soc. 287, 79 (1997).
[CrossRef]

Wallace, L.

O. L. Polyansky, N. F. Zobov, S. Viti, J. Tennyson, P. F. Bernath, and L. Wallace, Science 277, 346 (1997).
[CrossRef] [PubMed]

L. Wallace, P. Bernath, W. Livingston, K. Hinkle, J. Busler, B. Guo, and K. Zhang, Science 268, 1155 (1995).
[CrossRef] [PubMed]

Zhang, K.

O. L. Polyansky, J. R. Busler, B. Guo, K. Zhang, and P. F. Bernath, J. Mol. Spectrosc. 176, 305 (1996).
[CrossRef]

L. Wallace, P. Bernath, W. Livingston, K. Hinkle, J. Busler, B. Guo, and K. Zhang, Science 268, 1155 (1995).
[CrossRef] [PubMed]

Zobov, N. F.

O. L. Polyansky, N. F. Zobov, S. Viti, J. Tennyson, P. F. Bernath, and L. Wallace, Science 277, 346 (1997).
[CrossRef] [PubMed]

Appl. Opt.

J. Mol. Spectrosc.

O. L. Polyansky, J. R. Busler, B. Guo, K. Zhang, and P. F. Bernath, J. Mol. Spectrosc. 176, 305 (1996).
[CrossRef]

J.-Y. Mandin, V. Dana, C. Camy-Peyret, and J.-M. Flaud, J. Mol. Spectrosc. 152, 179 (1992).
[CrossRef]

J. Opt. Soc. Am. B

J. Phys. Chem.

H. Harde, R. A. Cheville, and D. Grischkowsky, J. Phys. Chem. 101, 3646 (1997).
[CrossRef]

Mol. Phys.

R. R. Gamache and L. S. Rothman, Mol. Phys. 128, 360 (1988).

J. M. Flaud, C. Camy-Peyret, and J. P. Maillard, Mol. Phys. 32, 499 (1976).
[CrossRef]

C. Camy-Peyret, J. F. Flaud, J. P. Maillard, and G. Guelachvili, Mol. Phys. 33, 1641 (1977).
[CrossRef]

Mon. Not. R. Astron. Soc.

S. Viti, J. Tennyson, and O. L. Polyansky, Mon. Not. R. Astron. Soc. 287, 79 (1997).
[CrossRef]

Opt. Lett.

Science

O. L. Polyansky, N. F. Zobov, S. Viti, J. Tennyson, P. F. Bernath, and L. Wallace, Science 277, 346 (1997).
[CrossRef] [PubMed]

L. Wallace, P. Bernath, W. Livingston, K. Hinkle, J. Busler, B. Guo, and K. Zhang, Science 268, 1155 (1995).
[CrossRef] [PubMed]

Other

J. M. Flaud, C. Camy-Peyret, and R. A. Toth, Water Vapour Line Parameters from Microwave to Medium Infrared (Pergamon, Oxford, 1981).

G. L. Minkoff and C. F. H. Tipper, Chemistry of Combustion Reactions (Butterworth, London, 1962).

C. H. Townes and A. L. Schawlow, Microwave Spectroscopy (Dover, New York, 1975).

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Figures (3)

Fig. 1
Fig. 1

Experimental schematic of THz time-domain spectroscopy (THz-TDS) setup and flat flame burner.

Fig. 2
Fig. 2

(a) Time-domain scan with a 1:30 propane–air flame. The definition of zero time is arbitrary. The inset shows the main THz pulse in detail. (b) Closeup of the region before the arrival of the THz pulse both with and without the flame. (c) Amplitude spectrum of pulse in (a).

Fig. 3
Fig. 3

Measured (filled circles) power absorption coefficient compared with that calculated for the vibrational ground state (solid curves) and the first ν2 vibrational state (solid curves offset by -0.01) of hot-water vapor. The single unidentified line is indicated by the arrow.

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