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