Nonlinear correlation spectroscopy (NLCS).

Geissbuehler M; Bonacina L; Shcheslavskiy V; Bocchio NL; Geissbuehler S; Leutenegger M; Märki I; Wolf JP; Lasser T

doi:10.1021/nl300070n

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Journal article

Nonlinear correlation spectroscopy (NLCS).

Geissbuehler M Laboratoire d'Optique Biomédicale LOB, École Polytechnique Fédérale de Lausanne (EPFL), Switzerland. matthias.geissbuehler@epfl.ch
Bonacina L
Shcheslavskiy V
Bocchio NL
Geissbuehler S
Leutenegger M
Märki I
Wolf JP
Lasser T

2012-03-01

Published in:

Nano letters. - 2012

English We present a novel concept for optical spectroscopy called nonlinear correlation spectroscopy (NLCS). NLCS analyses coherent field fluctuations of the second and third harmonic light generated by diffusing nanoparticles. Particles based on noncentrosymmetric nonlinear materials such as KNbO(3) show a strong second as well as third harmonic response. The method and the theory are introduced and experimental NLCS results in fetal calf serum are presented showing the promising selectivity of this technique for measurement in complex biological environments.

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