title: Dual-wavelength green laser with a 4.5 THz frequency difference based on self-frequency- doubling in Nd3+ -doped aperiodically poled lithium niobate.
abstract: We report a dual-wavelength continuous-wave laser at 542.4 and 546.8 nm based on an Nd(3+)-doped aperiodically poled lithium niobate crystal. Two fundamental infrared (IR) wavelengths at 1084.8 and 1093.6 nm are simultaneously oscillated and self-frequency-doubled to green. The aperiodic domain distribution patterned in the crystal allows for quasi-phase matched self-frequency-doubling of both IR fundamentals while avoiding their sum-frequency mixing.
authors.affiliation: Departamento de Física y Arquitectura de Computadores, Teoría de la Señal y Comunicaciones, Universidad Miguel Hernández, Av. de la Universidad s/n, 03202 Elche, Spain.
authors.forename: H
authors.initials: H
authors.lastname: Maestre
authors.forename: A J
authors.initials: AJ
authors.lastname: Torregrosa
authors.forename: C R
authors.initials: CR
authors.lastname: Fernández-Pousa
authors.forename: M L
authors.initials: ML
authors.lastname: Rico
authors.forename: J
authors.initials: J
authors.lastname: Capmany