Mid-infrared optical parametric oscillators (OPOs) utilising BaGa4Se7 crystals represent a significant advance in the field of nonlinear optics. BaGa4Se7, a non-oxide crystal with a wide transparency ...

The nonlinear susceptibility is a measure of a material's nonlinear response to an applied electric field. It determines the strength of the nonlinear effects and is related to the crystal's symmetry ...

Widely tunable and high resolution mid-infrared radiation source operating in 3-5 µm region has been applied to numerous frontier applications, including remote sensing, molecular spectroscopy, and ...

Laguerre-Gaussian (LG) modes are a type of light wave that can carry the external torque of photons as they move through space. They are useful in many fields, from optical communications to ...