Strong chiroptical effects in surface second harmonic generation obtained for molecules exhibiting excitonic coupling chirality

We measured nonlinear optical activity in second harmonic generation (SHG) by reflection on a thin film of chiral molecules. We selected the structure of our molecules in order to obtain very large chiroptical effects. We indeed measured an angle of rotation of the second harmonic polarization as la...

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Bibliographic Details
Published in:Chemical physics letters 2002-08, Vol.362 (1), p.103-108
Main Authors: Schanne-Klein, M.C, Boulesteix, T, Hache, F, Alexandre, M, Lemercier, G, Andraud, C
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Exact sciences and technology
Frequency conversion
harmonic generation, including high-order harmonic generation
Fundamental areas of phenomenology (including applications)
Harmonic generation, frequency conversion
Molecular properties and interactions with photons
Nonlinear optics
Optical activity and dichroism
magnetooptical and electrooptical spectra
Optical activity, optical rotation
circular dichroism
Optics
Physics
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Summary:We measured nonlinear optical activity in second harmonic generation (SHG) by reflection on a thin film of chiral molecules. We selected the structure of our molecules in order to obtain very large chiroptical effects. We indeed measured an angle of rotation of the second harmonic polarization as large as 66° for an acridine substituted Tröger base. This is in good agreement with our theoretical expectations for such an excitonic coupling chirality.
ISSN:0009-2614
1873-4448
DOI:10.1016/S0009-2614(02)01030-8