Conditions for formation of a two-wave soliton in a resonance medium

Yury V. Kistenev, Alexander V. Shapovalov

Mikhail Yu. Gubin, A. V. Prokhorov, M. G. Gladush +2 more

We consider the problem of formation of optical vortex solitons in a medium of three-level atoms, taking into account the local field effects. The principal possibility of formation of optical solitons controlled by an optical pump wave under the off-resonance Raman conditions of the lambda-type interaction scheme is predicted in an optically dense medium, i.e., in a hollow-core photonic-crystal optical fibre filled with a gas of cold atoms 87 Rb.

Alexander A. Zabolotskii

O. G. Romanov

We present the theoretical model of coherent interactions of the light beams in a two-level resonant medium, taking into account a spatial-periodic modulation of the parameters of nonlinear medium in an interference field as well as nonlinear behavior of refractive index and absorption coefficient due to optical bleaching. As evidenced by the results of investigations described in this work, the process of the light beams interaction via scattering from dynamically induced optical gratings in two-level resonant medium is characterized by a number of interesting features like mutual attraction and repulsion, irradiation of additional beams probably due to soliton-soliton diffraction mode, formation of dark spatial solitons in the mode of defocusing interaction that can be used for all-optical control over the spatial structure of laser beams. Formation of bound states of spatial cavity solitons upon intracavity four-wave mixing and possibilities for control over all-optical soliton-based operations are also discussed.

Guram T. Adamashvili

I. A. Bulatova, Yury V. Kistenev, Yurii N. Ponomarev +1 more

Self-formation of one or several soliton-like pulses from an initially nonsoliton powerful laser pulse during its propagation through different types of resonant single- and two-component medium is studied by using two-level and multi-level models of a medium.