Temporal and angular analysis of nonlinear scattering in carbon-black suspensions in water and ethanol

摘要: The physical origin of the nonlinear scattering light induced by focusing intense laser pulses onto carbon-black suspensions (CBS’s) is discussed through interpretation pump–probe experiments and angular analyses. Pump–probe are carried out with a time delay ranging from picoseconds to milliseconds, analyses performed in both picosecond nanosecond regimes. comparison between experimental results obtained solutions CBS water, ethanol, indoaniline ethanol shows that phenomenon associated carbon particles within first nanoseconds, influence solvent being significant only at much longer times thermal relaxation processes. Thermodynamical considerations confirm these clearly show vaporized or (and) ionized particle may be an efficient center for visible wavelengths. measurements time-integrated intensities 10-ns-duration demonstrate multiple high fluences. Time-resolved existence shock wave during growth centers created percussive picosecond-duration pump pulse.