Abstract

We report on a novel laser-induced fluorescence triple-integration method (LIFTIME) that is capable of making rapid, continuous fluorescence lifetime measurements by a unique photon-counting technique. The LIFTIME has been convolved with picosecond time-resolved laser-induced fluorescence, which employs a high-repetition-rate mode-locked laser, permitting the eventual monitoring of instantaneous species concentrations in turbulent flames. We verify the technique by application of the LIFTIME to two known fluorescence media, diphenyloxazole (PPO) and quinine sulfate monohydrate (QSM). PPO has a fluorescence lifetime of 1.28 ns, whereas QSM has a fluorescence lifetime that can be varied from 1.0 to 3.0 ns. From these liquid samples we demonstrate that fluorescence lifetime can currently be monitored at a sampling rate of up to 500 Hz with less than 10% uncertainty (1σ) .

© 1998 Optical Society of America

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1997

1996

1995

1989

R. M. Ballew and J. N. Demas, Anal. Chem. 61, 30 (1989).

A. J. Alfano, Appl. Opt. 28, 23 (1989).

1985

M. C. Drake and R. W. Pitz, Exp. Fluids 3, 283 (1985).

1983

R. A. Lampert, K. A. Chewter, D. Phillips, D. V. O'Conner, A. J. Roberts, and S. R. Meech, Anal. Chem. 55, 68 (1983).

Alfano, A. J.

A. J. Alfano, Appl. Opt. 28, 23 (1989).

Ballew, R. M.

R. M. Ballew and J. N. Demas, Anal. Chem. 61, 30 (1989).

Carter, C. D.

J. R. Reisel, C. D. Carter, and N. M. Laurendeau, Energy Fuels 11, 1092 (1997).

Chewter, K. A.

R. A. Lampert, K. A. Chewter, D. Phillips, D. V. O'Conner, A. J. Roberts, and S. R. Meech, Anal. Chem. 55, 68 (1983).

Demas, J. N.

R. M. Ballew and J. N. Demas, Anal. Chem. 61, 30 (1989).

Drake, M. C.

M. C. Drake and R. W. Pitz, Exp. Fluids 3, 283 (1985).

King, G. B.

Klassen, M. S.

Lampert, R. A.

R. A. Lampert, K. A. Chewter, D. Phillips, D. V. O'Conner, A. J. Roberts, and S. R. Meech, Anal. Chem. 55, 68 (1983).

Laurendeau, N. M.

Meech, S. R.

R. A. Lampert, K. A. Chewter, D. Phillips, D. V. O'Conner, A. J. Roberts, and S. R. Meech, Anal. Chem. 55, 68 (1983).

D. V. O'Conner, S. R. Meech, and D. Phillips, Chem. Phys. Lett. 88, 22 (1982).

O'Conner, D. V.

R. A. Lampert, K. A. Chewter, D. Phillips, D. V. O'Conner, A. J. Roberts, and S. R. Meech, Anal. Chem. 55, 68 (1983).

D. V. O'Conner, S. R. Meech, and D. Phillips, Chem. Phys. Lett. 88, 22 (1982).

Phillips, D.

R. A. Lampert, K. A. Chewter, D. Phillips, D. V. O'Conner, A. J. Roberts, and S. R. Meech, Anal. Chem. 55, 68 (1983).

D. V. O'Conner, S. R. Meech, and D. Phillips, Chem. Phys. Lett. 88, 22 (1982).

Pitz, R. W.

M. C. Drake and R. W. Pitz, Exp. Fluids 3, 283 (1985).

Reichardt, T. A.

Reisel, J. R.

J. R. Reisel, C. D. Carter, and N. M. Laurendeau, Energy Fuels 11, 1092 (1997).

Renfro, M. W.

Roberts, A. J.

R. A. Lampert, K. A. Chewter, D. Phillips, D. V. O'Conner, A. J. Roberts, and S. R. Meech, Anal. Chem. 55, 68 (1983).

Anal. Chem.

R. M. Ballew and J. N. Demas, Anal. Chem. 61, 30 (1989).

R. A. Lampert, K. A. Chewter, D. Phillips, D. V. O'Conner, A. J. Roberts, and S. R. Meech, Anal. Chem. 55, 68 (1983).

Appl. Opt.

Chem. Phys. Lett.

D. V. O'Conner, S. R. Meech, and D. Phillips, Chem. Phys. Lett. 88, 22 (1982).

Energy Fuels

J. R. Reisel, C. D. Carter, and N. M. Laurendeau, Energy Fuels 11, 1092 (1997).

Exp. Fluids

M. C. Drake and R. W. Pitz, Exp. Fluids 3, 283 (1985).

Opt. Lett.

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