Numéro
J. Phys. Colloques
Volume 48, Numéro C7, Décembre 1987
1st International Laser M2P Conference
Page(s) C7-405 - C7-408
DOI https://doi.org/10.1051/jphyscol:1987797
1st International Laser M2P Conference

J. Phys. Colloques 48 (1987) C7-405-C7-408

DOI: 10.1051/jphyscol:1987797

LASER-INDUCED TRANSIENT GRATINGS : THE METHOD AND ITS APPLICATIONS

R. CASALEGNO

Laboratoire de spectrométrie Physique associé au CNRS, Université Scientifique, Technologique et Médical de Grenoble, BP 87, F-38402 Saint-Martin-d'Hères Cedex, France


Abstract
Transient grating techniques are shown to be a very well adaptetd method to follow the response of a material to short laser excitation pulses. Besides its enhanced sensitivity this technique is suited for the study of processes requiring a spatially modulated excitation of the medium. The choise of experimental conditions will select the response mechanismes and generate differente types of gratings. Each type wille be illustrated by an example.