Efficient violet upconversion signal from a fluoride fiber doped with erbium

When an erbium-doped fluoride fiber was pumped with a red dye laser beam that resonantly excites the (4)F(9/2) state, we detected efficient violet upconversion emission from the (2)P(3/2) state that is much stronger than the green upconversion emission from the (4)S(3/2) state. Such unusual violet e...

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Bibliographic Details
Published in:Optics letters 1997-03, Vol.22 (5), p.295-297
Main Authors: Pope, C L, Reddy, B R, Nash-Stevenson, S K
Format: Article
Language:English
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Summary:When an erbium-doped fluoride fiber was pumped with a red dye laser beam that resonantly excites the (4)F(9/2) state, we detected efficient violet upconversion emission from the (2)P(3/2) state that is much stronger than the green upconversion emission from the (4)S(3/2) state. Such unusual violet emission was found to be due to a three-photon excitation process.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.22.000295