Share Email Print

Proceedings Paper

Determination of two-photon extinction coefficients of organic molecules
Author(s): Peter C.E. Tackx; Martti Kauranen; Andre P. Persoons
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

A phase-conjugate interferometer, based on degenerate four-wave mixing in the retroreflected pump beam configuration, is used to determine the complex third-order hyperpolarizability of organic molecules in solution. The imaginary part of this third-order hyperpolarizability yields a value for the two-photon extinction coefficient of the molecule. This is an absolute value with respect to the reference material and does not depend on the laser intensity used. We show that the observed attenuation in the phase-conjugate signal is not necessarily due to two- photon absorption. In several cases more complex loss mechanisms are responsible for the absorption of the signal.

Paper Details

Date Published: 23 September 1994
PDF: 8 pages
Proc. SPIE 2285, Nonlinear Optical Properties of Organic Materials VII, (23 September 1994); doi: 10.1117/12.187515
Show Author Affiliations
Peter C.E. Tackx, Univ. of Leuven (Belgium)
Martti Kauranen, Univ. of Leuven (Finland)
Andre P. Persoons, Univ. of Leuven (Belgium)

Published in SPIE Proceedings Vol. 2285:
Nonlinear Optical Properties of Organic Materials VII
Gustaaf R. Moehlmann, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?