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Conferences > CLEO > 1995 > CFP > CFP3
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1995),
  • paper CFP3

Lifetime-based optical CO2 sensor with 635-nm laser-diode excitation and anti-Stokes detection

Jeffrey Sipior, M. Romauld, Gary M. Carter, Joseph R. Lakowicz, and Govind Rao

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Abstract

Frequency-domain determination of fluorescence lifetimes has recently been utilized to determine concentrations of biologically important gases, including O2 and CO2 1 This technique measures the change in fluorescence lifetime due to the analyte gas by measuring the phase shift between an intensity-modulated excitation and the modulated emission. By using fluorescence lifetimes instead of intensities, interferences due to probe leaching or bleaching and source-intensity variations due to scattering, absorbance, or other causes can be avoided.

© 1995 Optical Society of America

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