Answers are grounded in this paper and cite their sources.
Changes in the transmission of porous silicon layers induced by ultrashort laser pulses are studied by using picosecond pump and probe measurements. Bleaching bands attributed to the saturation of optical transitions in silicon wires or/and crystallites with nanometer dimensions are observed in time-resolved differential transmission spectra. The measured nonlinearity is characterized by a relatively high value of the third-order nonlinear susceptibility (≊10−8 esu) and by fast relaxation dynamics (transmission recovery time is 30–40 ps).
No takes yet. Share an insight, caveat, or question.
Klimov et al. (1994) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: