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.
J M
JM
Hickmann
E A
EA
Gouveia
A S
AS
Gouveia-Neto
D C
DC
Dini
S
S
Celaschi