III The Quantum Coherence Properties of Stimulated Raman Scattering

Kōichi Shimoda

N. I. Shamrov

S. J. Kuo, Czesław Radzewicz, Michael G. Raymer

An experimental study of stimulated Raman scattering (SRS) has been performed using a subnanosecond pulse to investigate the statistical properties of Stokes light generation.1 There are macroscopic fluctuations of Stokes pulse energy as well as random generation of spatial mode patterns. When the scattering volume has a low Fresnel number, the spatial patterns of the SRS resemble cavity modes. When the Fresnel number is large, there are irregular structures appearing across the Stokes profile in a random fashion. A theoretical study of the spatial and temporal coherence properties of Raman generation using a Gaussian-profile pump pulse has also been carried out. Using a Gaussian-Laguerre mode expansion technique,2 it is found that the higher-order spatial coherence modes1 experience different gain than the lower-order spatial coherence modes, and consequently the temporal coherence associated with each individual spatial coherence mode is different.

M. G. Raymer, Ian A. Walmsley

Яков Семенович Бобович, A. V. Bortkevich

CONTENTS I. Introduction 1 II. Principal Physical Hypotheses and Formulas 2 III. Requirements Imposed on the Substances Being Studied. Processes Accompanying Resonance Stimulated Raman Scattering. Experimental Systems 7 IV. Quasiresonance Stimulated Raman Spectra of Unexcited Molecules 10 V. Resonance Stimulated Raman Scattering of Excited Molecules 13 VI. Conclusion 18 Bibliography 19

Partha Sarathi Gupta, B. K. Mohanty