Remote excitation and detection of two-photon fluorescence using femtosecond laser pulses

The results of the experiments on the excitation and detection of two-photon fluorescence of the dyes by the intense light channels generated by controlling the wavefront of the femtosecond laser pulses are presented. Emission of the dyes and the detection of the backward signal were carried out according to the lidar scheme at a distance of 100 m from the source.