Stochastic Optical Signals and Photon Fluctuations

Michael Scalora, C. M. Bowden, Joseph W. Haus

We use numerical methods to investigate stochastic and coherence properties of the fields transverse profiles in stimulated Raman scattering. In the linear regime with diffractive coupling, the amplified signal is characterized by fluctuations that are macroscopic. We find an interesting dependence of the beam-pointing fluctuations on photon conversion efficiency. Our results for the linear regime compare well with recent experiments, and we report an increase in beam-pointing fluctuations in the nonlinear regime. We discuss the results of modeling with one and two transverse dimensions.

Derek Abbott, Jeffrey H. Shapiro, Y. Yamamoto

C. Gerlach, F.‐J. Schütte, R. Tiebel

B. P. Kashnikov, Valeri V. Makarov, Gennady I. Smirnov +1 more

The dependence of stochastic processes in fiber optical information systems on radiation polarization modes, anisotropy parameters, and optical fiber nonlinearity is investigated. The polarization-statistical properties determined for signals in optical-fiber information systems make it possible to simulate new method for controlling quantum amplitudes and phase fluctuations of photons, which must increase the information efficiency of optical communication channels.

P. Heszler

František Šanda, Shaul Mukamel

Recursive relations are derived for nonlinear optical response functions of a two-level chromophore with stochastic frequency fluctuations described by a continuous-time random walk. Stationary ensembles are constructed and signatures of anomalous relaxation in the photon echo signal are discussed for a two state jump modulation with a power law waiting time density function psi(t) approximately t(-alpha-1). Stretched exponential decay of the photon echo signal is predicted for 0<alpha<1 and power law asymptotics for 1<alpha<2.