PARAMETRIC LIGHT GENERATOR Russian patent published in 2019 - IPC H01S3/83 H01S3/108 G02F1/39 

FIELD: lighting engineering.

SUBSTANCE: invention relates to laser equipment. Parametric light generator has a positive nonlinear optical crystal installed with possibility of rotation relative to the pumping direction in the holder from heat-conducting material and connected to the means of its thermal stabilization. Crystal is placed in a three-mirror annular resonator made of three flat mirrors arranged on a horizontal plane at the tops of the triangle to form different arms such that two flat mirrors, one of which is the input for pumping, are located at such a small distance from each other, that short arm of resonator in plane between said mirrors sets angle γ between the other arms of the resonator, which enables double pumping through the crystal. At that, in annular resonator there provided is ray path in vertical plane, wherein short arm of resonator is formed in vertical plane by angle reflector with fixed angle ε, defined by relationship ε=90°-γ/2. Nonlinear optical crystal is installed in the holder with possibility of its rotation in the horizontal plane relative to the pumping direction polarized in the vertical plane. Thermal stabilization device of the crystal is a thermoelectric module based on Peltier elements, which is installed in contact with the crystal holder.

EFFECT: possibility of creating a compact circuit of a parametric light generator, characterized by possibility of operating in a wide range of operating temperatures.

1 cl, 12 dwg