Excitation spectroscopy on single molecules in solids at low temperatures

L. Fleury; H. Talon; J. Bernard; M. Orrit

doi:10.1117/12.155640

24 September 1993 Excitation spectroscopy on single molecules in solids at low temperatures

L. Fleury, H. Talon, J. Bernard, M. Orrit

Proceedings Volume 1711, High-Performance Optical Spectrometry; (1993) https://doi.org/10.1117/12.155640
Event: High Performance Optical Spectrometry, 1992, Warsaw, Poland

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.

Citation Download Citation

L. Fleury, H. Talon, J. Bernard, and M. Orrit "Excitation spectroscopy on single molecules in solids at low temperatures", Proc. SPIE 1711, High-Performance Optical Spectrometry, (24 September 1993); https://doi.org/10.1117/12.155640

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