Parametric generation in media with local response in unclosed resonators
Mazur A. P. , Novikov A. D. , Odulov S. G. , Soskin M. S.
Steady-state generation has been achieved in counterpropagating four-wave mixing in an iron-doped lithium niobate crystal in a two-sided mirror layout and in a ring layout. A new calculation shows that generation can occur in a medium with a nonlinear local response when the excited waves are tuned away from the pump waves in terms of angle and frequency. The possibility of phase conjugation in the two-sided-mirror layout due to an additional frequency shift of one of the pump waves is discussed.