Second Harmonic Generation of Violet Light in Femtosecond-Laser-Inscribed BiB₃O₆Cladding Waveguides

Abstract

Abstract:We report on the second harmonic generation of violet light of a nonlinear cladding waveguide in BiB 3 O 6 crystal produced by femtosecond laser inscription. Under continuous-wave pump laser at 800 nm, the guided second harmonic wave at 400 nm with a conversion efficiency of ~0.32% has been realized through the Type I birefringence phase matching configuration.