ISSN:
1432-0649
Schlagwort(e):
42.65J
;
42.60
;
32.80
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract As a rule, phase gratings yield no power transfer in two-beam excite-probe experiments. We show that an exception to this rule is that of ultrashort-pulse excite-probe experiments involving slow phase effects, such as thermal gratings, occurring in a moving sample medium under high-repetition-rate excitation. A symmetric coherent artifact results, and depending on the direction of the sample motion, its amplitude can be positive, negative, or zero. This artifact occurs only in multiple-pulse experiments, involving accumulated gratings, while, on the other hand, the antisymmetric artifact (described by Palfrey and Heinz) results only from single-pulse effects. We discuss these two complementary effects and present both theory and experiments.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00348972
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