Abstract
The question whether double phase conjugator is an oscillator or an amplifier is addressed by a careful numerical investigation of the operation of the device in the regime of diminishing seeds. It is established that when the transverse and dynamical effects are included, the double phase conjugator can be both an oscillator and an amplifier, depending on the values of the diffraction and the convection parameters. Dynamics at threshold is investigated by two independent numerical methods, to find that competitive modes other than phase conjugate can grow and be stabilized.
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