APPLICATION OF THE ANTIBUNCHING IN DYE FLUORESCENCE - MEASURING THE EXCITATION RATES IN SOLUTION

Experiments on antibunching in fluorescence of Rhodamine 6G in aqueous solution have been carried out under optimized conditions. The depend ence of the antibunching correlation times on the excitation intensity has been studied, taking into account the saturation effects in the G aussian intensity profile of the exciting laser beam. Information on t he decay and excitation rates can be obtained and, with the knowledge of the excitation intensity, the absorption cross-section can be estim ated.