ON THE MICROSCOPIC MECHANISMS OF COLLOIDA L SUSPENSIONS OPTICAL NONLINEARITIES

Authors
LAFFON E
Citation
E. Laffon, ON THE MICROSCOPIC MECHANISMS OF COLLOIDA L SUSPENSIONS OPTICAL NONLINEARITIES, Comptes rendus de l'Academie des sciences. Serie 2, Mecanique, physique, chimie, sciences de l'univers, sciences de la terre, 317(2), 1993, pp. 165-170
Citations number
7
Categorie Soggetti
Multidisciplinary Sciences
Journal title
Comptes rendus de l'Academie des sciences. Serie 2, Mecanique, physique, chimie, sciences de l'univers, sciences de la terre → ACNP
ISSN journal
07644450
Volume
317
Issue
2
Year of publication
1993
Pages
165 - 170
Database
ISI
SICI code
0764-4450(1993)317:2<165:OTMMOC>2.0.ZU;2-A
Abstract
In this Note, we propose an interpretation for the microscopic mechani sms of optical nonlinearities observed in colloidal suspensions, which is expressed in terms of laser-induced variations in the solute diffu sive properties- Electrostriction and SORET effect are unified with 1. Prigogine's SORET effect kinetic theory. This theory allows us to def ine an original thermodiffusive effect, produced by an inhomogeneous a bsorption of the laser energy by the solute in the suspension. We theo retically evaluate this third effect when the size of the solute parti cles is much larger than the size of the solvent molecules.