ISSN:
1432-0649
Keywords:
33
;
42.65
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Theoretical and experimental data are presented on the propagation of picosecond pulses in weakly excited dye solutions. It is shown that the so called “coherence peak” of the induced dichroism observed at short delay times depends on the vibronic relaxation and the excited state absorption of the dye molecules. Interpretation of the experimental results is considerably facilitated at low excitation level. The vibrational relaxation time in theS 1 state of phenoxazone 9 was measured to be τ v =0.8±0.3 ps, 0.7±0.2 ps and 0.7±0.2 ps, respectively, for the solvents dioxane, solid polystyrene and CCl4. For rhodamine 6 G in ethanol we find τ v =0.5±0.2 ps.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00694635
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