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Proceedings Paper

Excitation spectroscopy on single molecules in solids at low temperatures
Author(s): L. Fleury; H. Talon; J. Bernard; M. Orrit
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Paper Abstract

By severely reducing the number of solute molecules in the illuminated sample, the optical resonances of individual molecules can be resolved in a fluorescence excitation spectrum. Single molecule lines can be studied as a function of time and temperature: sudden jumps of their resonance frequencies are due to spectral diffusion processes. The signal from a single molecule displays specific correlations which makes time-resolved studies possible. Here, emphasis is put on photon-bunching arising from intersystem crossing (ISC). ISC rates are deduced from the observed decay rates of the correlation and are found to differ from molecule to molecule. A single molecule is a truly local probe of its environment by means of which fundamental studies of the matrix dynamics as well as nanophysics experiments may be undertaken.

Paper Details

Date Published: 24 September 1993
PDF: 10 pages
Proc. SPIE 1711, High-Performance Optical Spectrometry, (24 September 1993); doi: 10.1117/12.155640
Show Author Affiliations
L. Fleury, Univ. Bordeaux I (France)
H. Talon, Univ. Bordeaux I (France)
J. Bernard, Univ. Bordeaux I (France)
M. Orrit, Univ. Bordeaux I (France)

Published in SPIE Proceedings Vol. 1711:
High-Performance Optical Spectrometry
Maksymilian Pluta; Aleksandra Kopystynska; Mariusz Szyjer, Editor(s)

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