Conversion cell for frequency conversion system and frequency conversion system

摘要

According to one aspect, an invention relating to a frequency conversion cell (10) includes an entrance surface (121A) for receiving at least one incident beam and an exit surface (121B) for emitting at least one frequency converted beam. ) And at least two parallel surfaces (120A, 120B) different from the entrance surface and the exit surface, and a birefringent nonlinear crystal (12) characterized by a first phase matching wavelength, and a force action Said external machine comprising and acting means (14, 14A) for applying an external mechanical force to at least one said parallel plane (120A), referred to as a plane and causing a change in the birefringence of said nonlinear crystal The force value is determined to obtain a phase that matches the nonlinear crystal at a second phase matching wavelength that is different from the first phase matching wavelength. [Selection] Figure 2