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Proceedings Paper

Concentration dependence of photoinduced birefringence and second-order susceptibility in all-optical poling
Author(s): Matti Virkki; Martti Kauranen; Arri Priimagi
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Paper Abstract

We study photoinduced molecular reorientation of the azobenzene derivative Disperse Red 1 embedded in poly(4-vinylpyridine) polymer matrix. Photoinduced axial order leading to birefringence and polar order leading to second-order nonlinear optical (NLO) response are induced by purely optical means. These two photoinduced properties are found to exhibit markedly different dependences on the chromophore concentration: the photoinduced second-order NLO response reaches its peak already at 23 wt. % concentration while the photoinduced birefringence increases up to 51 wt. % concentration. The results show that chromophore-chromophore intermolecular interactions work against polar order already at modest concentration. The axial order, on the other hand, is not as easily affected by such interactions.

Paper Details

Date Published: 1 May 2012
PDF: 8 pages
Proc. SPIE 8424, Nanophotonics IV, 84242S (1 May 2012); doi: 10.1117/12.922438
Show Author Affiliations
Matti Virkki, Tampere Univ. of Technology (Finland)
Martti Kauranen, Tampere Univ. of Technology (Finland)
Arri Priimagi, Aalto Univ. (Finland)
Tokyo Institute of Technology (Japan)


Published in SPIE Proceedings Vol. 8424:
Nanophotonics IV
David L. Andrews; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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