Third-order nonlinear circular dichroism in a liquid of chiral molecules

M. Alexandre; G. Lemercier; Chantal Andraud; H. Mesnil; Marie-Claire Schanne-Klein; François Hache

Third-order nonlinear circular dichroism in a liquid of chiral molecules

M. Alexandre ¹ G. Lemercier ¹ Chantal Andraud ¹ H. Mesnil ² Marie-Claire Schanne-Klein ² François Hache ²

1 Laboratoire de stéréochimie et interactions moléculaires

2 LOB - Laboratoire d'optique et biosciences

Abstract : We present the signature of optical activity in the third-order nonlinear response of a liquid of chiral molecules. The existence of a nonlinear circular dichroism is demonstrated on two enantiomers of ruthenium(II)tris(bipyridyl) by performing a one-beam experiment in which the polarization is modulated from right to left circular one. This technique is then extended to pump-probe experiments in which, by modulating the polarization of the probe or pump, we can measure a pump-induced circular dichroism on the probe. This technique opens up the possibility of observing dynamical processes related to the chirality on an ultrashort time-scale. © 2002 Elsevier Science B.V. All rights reserved.

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Submitted on : Wednesday, July 17, 2013 - 1:17:42 PM
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Third-order nonlinear circular dichroism in a liquid of chiral molecules

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Third-order nonlinear circular dichroism in a liquid of chiral molecules

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