Optimal Feedback Control of Two-Photon Fluorescence Based on Genetic Algorithm

An optimal feedback control of two-photon fluorescence in the ethanol olution of -dicyanomethylene-2-methyl-6-p-dimethyl-aminostryryl-4H-pyran (DCM) sing pulse-shaping technique based on genetic algorithm is emonstrated experimentally. The two-photon fluorescence of the DCM ethanol solution is enhanced in intensity of about 23%. The second armonic generation frequency-resolved optical gating (SHG-FROG) trace ndicates that the effective population transfer arises from the ositively chirped pulse. The experimental results appear the potential pplications of coherent control to the complicated molecular system.