Enhancement of third-harmonic blue-violet light at 440 nm by erbium ions in Er3 (+) -GeO2 -doped silica monomode optical fibers pumped at 1.319 mu m.
Hickmann
J M
JM
Gouveia
E A
EA
Gouveia-Neto
A S
AS
Dini
D C
DC
Celaschi
S
S