Near‐infrared spark source excitation for fluorescence lifetime measurements

Autor:	Graham Hungerford, David J. S. Birch, R.E. Imhof
Rok vydání:	1991
Předmět:	Argon Dye laser Materials science business.industry Fluorescence spectrometry chemistry.chemical_element Pulse duration Fluorescence Fluorescence spectroscopy Optics chemistry Coaxial business Instrumentation Excitation
Zdroj:	Review of Scientific Instruments. 62:2405-2408
ISSN:	1089-7623 0034-6748
DOI:	10.1063/1.1142255
Popis:	We have extended the range of excitation wavelengths from spark sources used in single photon timing fluorometry into the near infrared by means of the all‐metal coaxial flashlamp filled with an argon‐hydrogen gas mixture. At 750 nm this mixture gives ∼15 times the intensity available from pure hydrogen for a comparable pulse duration. Measurements are demonstrated by using the laser dye IR‐140 in acetone, for which a fluorescence lifetime of 1.20 ns is recorded.
Databáze:	OpenAIRE
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