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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 23, Iss. 15 — Aug. 1, 1998
  • pp: 1215–1217

Photon-counting technique for rapid fluorescence-decay measurement

Spencer D. Pack, Michael W. Renfro, Galen B. King, and Normand M. Laurendeau  »View Author Affiliations


Optics Letters, Vol. 23, Issue 15, pp. 1215-1217 (1998)
http://dx.doi.org/10.1364/OL.23.001215


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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

OCIS Codes
(030.5260) Coherence and statistical optics : Photon counting
(260.2510) Physical optics : Fluorescence
(300.2530) Spectroscopy : Fluorescence, laser-induced

Citation
Spencer D. Pack, Michael W. Renfro, Galen B. King, and Normand M. Laurendeau, "Photon-counting technique for rapid fluorescence-decay measurement," Opt. Lett. 23, 1215-1217 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-15-1215

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