CONTROLLED EXCITATION OF THE OPTICAL MODE IN A
COUPLED CHAIN
Alexander Fradkov, Boris Andrievsky, Eron Ljuttovitch Aero
The comosite crystalline lattice is modelled as two coupled mutually-penetrating sublattices. With the help of the “Internal Translation
Symmetry” principle the model was extended to the case of strongly nonlinear interacting sublattices. Dynamic models for the microscopic and macroscopic displacement fields
include parameters, depending on the lattice deformation.
This model is used for control of bifurcational
lattice transformation, caused by external stress or deformation. Possibilities of controlled excitation
of the optical mode of oscillation
by means of the energy pumping from the side of the
the acoustic mode based on feedback and non-feedback controls are analysed.