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Proceedings Paper

Measurement of chi(3)(-omega3;omega1,omega1,-omega2) spectra for poly[3-tetradecylthiophene]
Author(s): Myoungsik Cha; William Eugene Torruellas; Dieter Neher; George I. Stegeman; Mario Leclerc
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Paper Abstract

We demonstrate that the Maker fringe technique can be applied to third order frequency mixing experiments designed to measure the electronic (chi) (3)(-(omega) 3;(omega) 1,(omega) 1,-(omega) 2) dispersion with (omega) 1 for a poly[3-tetradecylthiophene] thin film. Both the magnitude and the phase of the (chi) (3) were obtained. In the magnitude spectrum there was a strong three-photon resonance where the output frequency ((omega) 3equals2(omega) 1-(omega) 2) corresponds to the energy level of the first one photon state. We also found a peak which could be either a 2(omega) 1 or a (Delta) (omega) (equals(omega) 1-(omega) 2) resonance. Since this method is considered to be more sensitive to two-photon resonances that third harmonic generation, it can be used as a powerful tool to probe two photon states in the case of thin film polymer samples.

Paper Details

Date Published: 23 July 1993
PDF: 7 pages
Proc. SPIE 1852, Nonlinear Optical Properties of Advanced Materials, (23 July 1993); doi: 10.1117/12.148460
Show Author Affiliations
Myoungsik Cha, CREOL/Univ. of Central Florida (South Korea)
William Eugene Torruellas, CREOL/Univ. of Central Florida (United States)
Dieter Neher, Max-Planck-Institut fuer Polymerforschung (Germany)
George I. Stegeman, CREOL/Univ. of Central Florida (United States)
Mario Leclerc, Univ. de Montreal (Canada)

Published in SPIE Proceedings Vol. 1852:
Nonlinear Optical Properties of Advanced Materials
Shahab Etemad, Editor(s)

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