logo

Laser Chemistry

PDF
Laser Chemistry / 1997 / Article

On this page

AbstractCopyright

Open Access

Volume 17 |Article ID 037594 | https://doi.org/10.1155/1997/37594

R. Gadonas, A. Pugzlys, K.-H. Feller, "Dispersion of Third Order Optical Nonlinearity of Pseudoisocyanine J-Aggregates", Laser Chemistry, vol. 17, Article ID 037594, 1 page, 1997. https://doi.org/10.1155/1997/37594

Dispersion of Third Order Optical Nonlinearity of Pseudoisocyanine J-Aggregates

R. Gadonas,1 A. Pugzlys,1 and K.-H. Feller2

1Vilnius University, Laser Research Center, Sauletekio ave. 10, Lithuania

2Fachhochschule Jena, Fachbereich Medizintechnik/Physikalische Technik, Tatzendpromenade 1b, Germany

Received17 Apr 1996

Abstract

Dispersion of degenerate four-wave mixing (DFWM) efficiency near the exciton resonance of aggregates of 1,1′-diethy1-2-2′-cyanine (pseudoisocyanine, PIC) chloride is reported. Correlation with the spectrum of imaginary parts of nonlinearity obtained by pump and probe techniques is discussed. Third order nonlinear susceptibility of PIC aggregates has been calculated supposing highest density packing attainable by Langmuir-Blodgett technique. The nonlinear figure-of-merit of aggregates was evaluated, which is intensity dependent due to exciton annihilation. Observed intensity and wavelength dependence of mixing efficiency is qualitatively explained in terms of absorption saturation, exciton annihilation, and subsequent generation of an excess diagonal disorder by vibrational energy accumulated in aggregates.

Copyright © 1997 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

More related articles

PDF Download Citation Citation
Order printed copiesOrder
Views62
Downloads17
Citations