Possibility of locking of stimulated Raman emission components in an optical resonator with a dispersive medium

An analysis is made of stimulated Raman emission (STRE) in an optical resonator filled inhomogeneously with the active component of a dispersive medium. Conditions are found for the effective parametric interaction of various Stokes (anti-Stokes) STRE components and the influence of this interaction on the phase relationship of the components is investigated. The possibility of a stable locking of the components is demonstrated whereby the total radiation output from the resonator is a regular sequence of subpicosecond (femtosecond) light pulses. An expression is derived for the locking band of two generated Stokes components and a prediction is made of the frequency modulation of the second Stokes component outside this band. Attention is drawn to the experimental possibility of the locking of the STRE components being manifest as the disappearance of their frequency modulation.