Abstract
Transient absorption measurements have become a standard tool of picosecond spectroscopy in studying very fast level kinetics. In fluorescent samples stimulated fluorescence is a competing process. In liquid samples rotational diffusion is contributing due to the polarization of light. A repetitive picosecond spectrometer is presented that greatly reduces the occurrence of stimulated fluorescence due to its low power and is capable of separating rotational diffusion and level kinetics.
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Based on a lecture given at the 5th International School of Quantum Electronics, Erice, 1975.
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Lessing, H.E. Transient absorption and rotational relaxation in the liquid state. Opt Quant Electron 8, 309–315 (1976). https://doi.org/10.1007/BF00619543
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DOI: https://doi.org/10.1007/BF00619543