Stochastic and microscopic theory of coherent optical transients (A)

Игорь Сергеевич Осадько

Alexander P. Nizovtsev, S. Ya. Kilin, P. R. Berman +2 more

Richard G. Brewer

Eiichi Hanamura

Photon echo and free induction decay, i.e., representative coherent optical transients, are described for two level system whose transition frequency is modulated by the Gaussian-Markoffian process. Photon echo signal is shown to decay biexponentially and to be effective in fixing the magnitude and the correlation time of the frequency modulation. Then we present the transition of the free induction decay rate against laser intensity from the Bloch type at the weak laser field into the Redfield one at the strong laser field.

Richard G. Brewer, Ralph G. DeVoe, Stephen Colby Rand +4 more

Robert F. Gragg, William C. Schieve, Adi R. Bulsara

We consider a gas of homogeneously broadened two-level atoms in a Fabry-Perot cavity injected with a coherent resonant electric field. Adopting a macroscopic birth-death description, we construct a stochastic master equation for the output intensity distribution. From this starting point we find the steady-state distribution and show it to be bimodal in the region of the optical bistability. We compare our results for the mean and variance with the microscopic results of Bonifacio, Gronchi, and Lugiato as a test of the stochastic-master-equation approach.