OPTICAL PARAMETRIC GENERATOR BASED ON A SLANT-STRIPE PERIODICALLY POLED NONLINEAR MATERIAL WITH OPTIMIZED LATERAL OUTPUT COUPLING OF A TERAHERTZ SIGNAL

摘要

An optical parametric device comprising a slant-stripe periodically poled nonlinear material that is operable to generate signal in response to interaction with a pump wave, the non-linear interaction being such that the pump and idler waves are collinear and the signal wave is non-collinear relative to the pump and idler waves, wherein the slant-stripe non-linear material is able to generate two idler waves and two signal waves, and the device is adapted to allow for the selection and output coupling of a required one of the two signal waves.