Guided blue and green upconversion fluorescence in an erbium-ytterbium-containing silicate glass.
We observe guided blue and green upconversion fluorescence in an ion-exchanged waveguide that is fabricated in an erbium-ytterbium-codoped silicate laser glass. The guides are optically pumped at room temperature by using a Ti:sapphire laser with lambda = 880-980 nm; the observed fluorescence is in two bands, 480-490 and 520-560 nm, and results from multiphoton excitation.
Jackel
J L
JL
Yi-Yan
A
A
Vogel
E M
EM
Von Lehmen
A
A
Johnson
J J
JJ
Snitzer
E
E