Polarization effect on the two-photon absorption of a chiral compound

In this report, we investigate the polarization effect (linear, elliptical and circular) on the two-photon absorption (2PA) properties of a chiral compound based in azoaromatic moieties using the femtosecond Z-scan technique with low repetition rate and low pulse energy. We observed a strong 2PA mod...

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Bibliographic Details
Published in:Optics express 2012-08, Vol.20 (17), p.18600-18608
Main Authors: Vivas, M G, De Boni, L, Bretonniere, Y, Andraud, C, Mendonca, C R
Format: Article
Language:English
Subjects:
Absorption
Catalysis
Chemical Sciences
Circular Dichroism - methods
Computer Simulation
Inorganic chemistry
Light
Manufactured Materials - analysis
Material chemistry
Models, Chemical
Organic chemistry
Photons
Refractometry - methods
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Summary:In this report, we investigate the polarization effect (linear, elliptical and circular) on the two-photon absorption (2PA) properties of a chiral compound based in azoaromatic moieties using the femtosecond Z-scan technique with low repetition rate and low pulse energy. We observed a strong 2PA modulation between 800 nm and 960 nm as a function the polarization changes from linear through elliptical to circular. Such results were interpreted employing the sum-over-essential states approach, which allowed us to model the 2PA circular-linear dichroism effect and to identifier the overlapping of the excited electronic states responsible by the 2PA allowed band.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.20.018600