Femtosecond photon echoes via non-Markovian dephasing

Lap Van Dao, Jeffrey A. Davis, Xiaoming Wen +1 more

Ahsan Nazir, S. D. Barrett

Charles V. Shank, P. C. Becker, H. L. Fragnito +1 more

Erik T. J. Nibbering, Douwe A. Wiersma, Koos Duppen

Femtosecond photon-echo experiments on sodium resorufin in dimethylsulfoxide at room temperature show that optical dephasing in solution is of non-Markovian character. A single Gauss-Markov stochastic modulation process is used to interpret both the femtosecond light-scattering results and the steady-state absorption spectrum. The optical dynamics of this system appears to fall in the intermediate modulation regime. No evidence was found for contributions of slower dynamical processes to the absorption line breadth.

D. A. Wiersma, Wim P. de Boeij, M. Emde +1 more

V. V. Fedyanin, Каримуллин Камиль Равкатович

Abstract In this paper we develop an approach based on the dynamic theory of optical coherent transients in solids that allows one to describe the processes of ultrafast optical dephasing observed in photon echo spectroscopy in disordered solid-state media. The approach was tested by modeling non-exponential decay curves measured in experiments on femtosecond and incoherent photon echo.