Resonant Raman frequency mixing under electromagnetically induced transparency conditions

A fully resonant process of Raman mixing of the frequencies of one weak and two strong laser radiations is considered. A study is made of the influence of dynamic (field) splitting of the levels and of quantum interference on nonlinear processes, including the propagation and attenuation of weak pump radiation and of the generated radiation. It is shown that efficient nonlinear frequency mixing is possible in electromagnetically induced transparency regions.