Abstract
Recent experiments1,2 have raised questions concerning the effects of transverse propagation (diffraction) and collisional dephasing on the quantum fluctuations of the energy of Stokes pulses generated by stimulated Raman scattering (SRS). It was originally believed that, if the Fresnel number of the laser-excited volume was close to unity, a theory based on one-dimensional spatial propagation should be adequate. This theory3 predicted that in the transient, unsaturated regime the pulse-energy probability distribution function P(W) should be essentially a negative exponential function of pulse energy W, with the maximum value of P(W) at W ≅ 0. Experiments2 showed, however, a maximum in P(W) at about one tenth of the mean pulse energy, in disagreement with the one-dimensional theory.
© 1984 Optical Society of America
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