Laser mode statistics probed by time delayed four-wave mixing in an atomic vapour

Belsley, M., Kaczmarek, M. and Ewart, P. (1994) Laser mode statistics probed by time delayed four-wave mixing in an atomic vapour. In Proceedings of 5th European Quantum Electronics Conference. IEEE. p. 69 . (doi:10.1109/EQEC.1994.698147).

Record type: Conference or Workshop Item (Paper)

Abstract

Coherent signals produced by time delayed, fluctuating optical pulses interacting with atoms in the vapor phase have attracted much interest recently, due to their potential as a source of sub-picosecond time resolution. The theoretical description of such experiments brings into play many profound questions connected with stochastic Bloch equations. For example, even though the noise properties of a single laser beam may be Markovian in nature, in these experiments the atoms are subjected to at least two time-delayed fields which may be correlated. Because the atoms retain some memory of the first field at the time when the second field acts, the entire process becomes non-Markovian. In principle, the variation of such parameters as the homogeneous and inhomogeneous widths, allows the experimenter some degree of control over this memory time associated with the atomic medium. &more...

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