Share Email Print

Proceedings Paper

Third-order optical nonlinearities of poly(arylamino-phenylenevinylene) studied with femtosecond pulses
Author(s): Anna Samoc; Marek Samoc; Barry Luther-Davies; Regina Stockmann; Hartwig Tillmann; Hans-Heinrich Hoerhold
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Time-resolved degenerate four-wave mixing (DFWM) experiments performed on films of triphenylamino-phenylene vinylene (TPA-PPV) copolymer show the modulus of the nonlinear refractive index to be (2.1#0.4) x10-13 cm2/W at 800 nm. The polymer was synthesized in the Hoerner-type polycondensation reaction. The films were characterized by optical absorption spectra, molecular weight and glass transition temperature measurements. The linear refractive index measurements performed with a prism coupler indicate that the annealed polymer films are isotropic. The films showed waveguiding of light. The DFWM experiments were performed in the forward BOXCARS geometry with simultaneous monitoring of the phase-matched and the non-phase-matched signals. This allowed measuring the nonlinearity of sub-micrometer thick films even in the presence of signals from a thick glass substrate. A cubic power dependence of the diffracted signal vs. pump intensity was observed as expected for the Kerr-type electronic nonlinearity. The signals showed a strong instantaneous response followed by a slow decay with the time constant 9#2 ps. Z-scan measurements showed the presence of two-photon absorption in the polymer.

Paper Details

Date Published: 19 October 2001
PDF: 10 pages
Proc. SPIE 4580, Optoelectronics, Materials, and Devices for Communications, (19 October 2001); doi: 10.1117/12.444983
Show Author Affiliations
Anna Samoc, Australian National Univ. (Australia)
Marek Samoc, Australian National Univ. (Australia)
Barry Luther-Davies, Australian National Univ. (Australia)
Regina Stockmann, Friedrich-Schiller-Univ. Jena (Germany)
Hartwig Tillmann, Friedrich-Schiller-Univ. Jena (Germany)
Hans-Heinrich Hoerhold, Friedrich-Schiller-Univ. Jena (Germany)

Published in SPIE Proceedings Vol. 4580:
Optoelectronics, Materials, and Devices for Communications
Tien Pei Lee; Qiming Wang, Editor(s)

© SPIE. Terms of Use
Back to Top