Fluorescence is more and more widely used as a tool of investigation, analysis, control and diagnosis in many fields relevant to physical, chemical, biological and medical sciences. New technologies con- tinuously emerge thanks to the progress in the design of light sources (e.g. laser diodes), detectors (3D, 4D) and compact ultrafast elec- tronic devices. In particular, much progress has been made in time- resolved fluorescence microscopy (FUM: Fluorescence Lifetime Imaging Microscopy; FCS: Fluorescence Correlation Spectroscopy). Furthermore, the sensitivity now allows one to detect a single...