Three-photon phenomena in the upconversion luminescence of erbium–ytterbium-codoped phosphate glass

Frequency upconversion into green and red luminescence in erbium–ytterbium-codoped phosphate glass pumped with a 970 nm diode laser is presented. The red upconversion emission results from a two-photon excitation process. The green emission results from a two- or three-photon excitation process with...

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Veröffentlicht in:Applied physics letters 2001-09, Vol.79 (12), p.1748-1750
Hauptverfasser: Song, Feng, Zhang, Guangyin, Shang, Meiru, Tan, Hao, Yang, Jia, Meng, Fanzhen
Format: Artikel
Sprache:eng
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Zusammenfassung:Frequency upconversion into green and red luminescence in erbium–ytterbium-codoped phosphate glass pumped with a 970 nm diode laser is presented. The red upconversion emission results from a two-photon excitation process. The green emission results from a two- or three-photon excitation process with the two-photon process dominating at low pumping power. Based on measurement of the excitation and emission spectra, a model of the three-photon excitation process has been developed. This model provides a good basis for explaining the effect of the three-photon process on the saturation of 1.54 μm laser power of Er, Yb-codoped phosphate glass laser.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1404996