We use approx.30 ps pulses at 532 nm to measure the complex excited-state molecular polarizability αe in a C60/benzene solution. We determine the imaginary part of αe by measuring the excited-state absorption cross-section in a pump-probe experiment. In a degenerate-four-wave-mixing (DFWM) experiment, we find that in delayed probing of the complex index gratings formed by approx.30 ps pulses, the thermal and the excited-state polarizability changes both contribute to these transient gratings.
|Number of pages||6|
|Journal||MRS Online Proceedings|
|Publication status||Published - 1995|
|MoE publication type||A1 Journal article-refereed|
|Event||Materials Research Society Fall Meeting - Boston, United States|
Duration: 28 Nov 1994 → 30 Nov 1994