Fast Fluorescence Measurements in Dyes

摘要

Excited singlet lifetimes of ∼2 nsec for cryptocyanine and ∼6 nsec for chloroaluminum phthalocyanine have been measured directly from fluorescence. The fast excitation source is a mode‐locked ruby laser. A model is proposed to explain these and other relaxation measurements compatible with the observed fluorescent efficiencies of the dyes.