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© Research
Publication : Physical review letters

Emission characterization of a single CdSe-ZnS nanocrystal with high temporal and spectral resolution by photon-correlation Fourier spectroscopy

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Physical review letters - 18 Jan 2008

Coolen L, Brokmann X, Spinicelli P, Hermier JP

Link to Pubmed [PMID] – 18232922

Phys. Rev. Lett. 2008 Jan;100(2):027403

We report a spectroscopic study of single colloidal CdSe/ZnS nanocrystals at low temperature. We use photon-correlation Fourier spectroscopy, a technique based on measuring the correlations of the intensities detected at the outputs of a Michelson interferometer. Spectral diffusion over a few microeV is evidenced, on a typical time scale of 200 micros. A time resolution as high as 20 micros is obtained, and an upper limit of 6.5 microeV emission linewidth is measured, corresponding to a coherence time of at least 200 ps, similar to the values for epitaxial quantum dots.

http://www.ncbi.nlm.nih.gov/pubmed/18232922