Dual-wavelength green laser with a 4.5 THz frequency difference based on self-frequency- doubling in Nd3+ -doped aperiodically poled lithium niobate.
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.
Maestre
H
H
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.
Torregrosa
A J
AJ
Fernández-Pousa
C R
CR
Rico
M L
ML
Capmany
J
J