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Title: Optical second harmonic generation in a low-bandgap polymer
Authors: Vandendriessche, Stefaan ×
Willot, Pieter #
V. K. Valev, Ventsislav #
Koeckelberghs, Guy
Verbiest, Thierry #
Issue Date: 20-Jun-2014
Publisher: Elsevier Sequoia S.A.
Series Title: Materials Chemistry and Physics vol:147 issue:3 pages:356-359
Abstract: Recently, much research has been performed on developing low-bandgap polymers for e.g. harvesting solar energy. In the quest to improve these properties, little attention has been paid to their nonlinear optical properties, despite their interesting linear optical spectra and structural similarities to certain nonlinear optically active compounds. We characterized the optical second harmonic generation of corona poled films of poly(cyclopenta[2,1-b;3,4-b′] dithiophen-4-ylidenedioctylmalonate). The unexpectedly large nonlinear optical susceptibilities and the thermal and temporal stability of the material compare favorably to other novel nonlinear optical materials despite the lack of a donor-acceptor dye. Additionally, the polymer displays a very low absorption in the relevant wavelength region. These results demonstrate the promise of these materials for nonlinear optical devices.
ISSN: 0254-0584
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
Polymer Chemistry and Materials
× corresponding author
# (joint) last author

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