SPACE - TIME STRUCTURE OF THE LIGHT REFLECTED IN AN EXPERIMENT OF SOLID MATTER IRRADIATION BY LASER LIGHT
A study of the space - time structure of the light reflected when a plastic target ((CH)-n) is irradiated at a maximum power of 10**12 watt/cm**2 by Nd glass laser pulse of nanosecond duration is described. The reflected light has been used for time integrated spot imaging, whereas the time dependence of the reflected power at the different angles has been studied by optical guides of different length coupled with a single fast photodiode. It has been found that: 1) the spot images are formed by a high contrast stationary speckle pattern, indicating the presence of a random phase mixing in the back-scattered light; 2) the interaction is characterized by a high reflection in the initial stages (t<or= 0.3 ns) followed by almost complete absorption.
Bibliographic Reference: WRITE TO SERVIZIO STUDI E DOCUMENTAZIONE - ENEA, CENTRO RICERCHE ENERGIA FRASCATI, C.P. 65 - 00044 FRASCATI, ROMA (ITALY) MENTIONING REPORT RT/FUS/85/16, 1985
Record Number: 1989125048100 / Last updated on: 1987-07-01
Available languages: en