Time Resolved Single Molecule Spectroscopy

Time Resolved Single Molecule Spectroscopy

A new method based on the calculation of autocorrelation functions for spectra measured at a high acquisition rate is developed to study spectral dynamics of single molecules. The technique allows for spectroscopy with time resolutions down to the luminescence lifetime. The method is used to study spectral diffusion in two-photon excitation spectra of diphenyloctatetraene molecules doped in an ...

Ultrafast Time-Resolved Spectroscopy

Time-resolved fluorescence spectroscopy

Theory of Time Dependent Fluctuations in Single Molecule Spectroscopy

Single molecule spectroscopy reveals fascinating fluctuation behaviors, not observed in standard spectroscopies, for example spectral jumps, blinking, photon bunching and anti bunching. We investigate the theory of time dependent fluctuations of single molecule fluorescence. In particular the relation between spectral diffusion, found in many single molecule experiments, and photon counting sta...

Time-resolved subnatural-width spectroscopy.

Spectra that are narrower than the natural width of decaying states can be achieved by beginning the observation of signals at a fixed delay time after excitation rather than immediately afterward. These signals are weaker (and noisier) than the full, time-unresolved signals. Applications of this line-narrowing technique to precision spectroscopy are discussed, and the properties of the resulti...