1. Self phase modulation of a Gaussian laser beam through a non linear thin film
- Author
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Luciano Rosario Maria Vicari, J. Quartieri, P. Cavaliere, Sergio Martellucci, and Francesco Bloisi
- Subjects
Diffraction ,diffraction rings ,01 natural sciences ,law.invention ,010309 optics ,Optics ,law ,0103 physical sciences ,nonlinear thin film ,Thin film ,Self-phase modulation ,self phase modulation ,010302 applied physics ,optical modulation ,business.industry ,Chemistry ,Numerical analysis ,nonlinear optics ,Gaussian laser beam ,Laser ,Nonlinear system ,thin films ,[PHYS.HIST]Physics [physics]/Physics archives ,microcomputer ,business ,Phase modulation ,Gaussian beam - Abstract
After some numerical experience, we developed a technique allowing the fast computation of an integral appearing in the mathematical study of the diffraction rings produced by the self phase modulation of a Gaussian laser beam through a non linear thin film. The results obtained by means of a simple microcomputer (IBM-PC) are shown to may be used for the deduction of the non linearity properties of the film Apres quelques experiences numeriques, nous avons mis au point une technique permettant l'evaluation rapide d'une integrale apparaissant dans l'etude mathematique des anneaux de diffraction produits par un faisceau laser gaussien auto-focalise dans une couche mince de materiau non lineaire. Nous montrons que les resultats obtenus a l'aide d'un simple micro-ordinateur (IBM-PC) peuvent etre utilises pour en deduire la valeur du coefficient de non-linearite de la couche etudiee
- Published
- 1989
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