Fluorescence up-conversion apparatus

The measurements of the fluorescence dynamics were made by a femtosecond fluorescence up-conversion apparatus similar to that described elsewhere [2], The fivhm of the instrumental response was 110 fs. The polarization axis of the pump pulse was set at 54.7° with respect to the probe to suppress the anisotropy effects. 

The fluorescence dynamics measurements were carried out with fluorescence up-conversion apparatus [1(b)] based on Ti Sapphire laser (820 nm, 800 mW, 76 MHz, -65 fs). The fwhm of the instrumental response was -110 fs. 

Fig. 9. Diagram of a fluorescence up-conversion apparatus. NLC, Nonlinear crystal for sum-frequency generation BS, beam splitter R, retroreflector.

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