Propriétés optiques non linéaires du deuxième et troisième ordre de nouveaux systèmes organiques conjugués de type push-pull

June 8 2012
Types d’événements
Séminaire SPCSI
Hasnaa EL OUAZZANI
SPEC Bât 466 p.111 (1er ét.)
Configuration de la salle en séminaire ou réunion
30 places
Vidéo Projecteur
08/06/2012
from 11:00

invité par Celine FIORINI

Abstract :

The nonlinear optical phenomena can make devices more efficient and compact providing functions such as frequency conversion or signal processing. However, optoelectronic applications require the synthesis of high performance materials, with specific optical/nonlinear optical properties. To satisfy this demand, an understanding of internal mechanisms is necessary. Because of their ease of production, their potential for optimization, and their large optical nonlinearities, organic compounds are of great interest and widely utilized in this field.

In this study, we investigate the nonlinear optical properties of a new conjugated organic “push-pull” systems using different techniques (SHG, THG, Z-scan) in order to study the influence of the electron transfer process and especially, the influence of donor and acceptors fragments, on the improvement of the second and third order nonlinear optical properties.

Laboratoire Moltech Anjou