Infrared-to-visible upconversion luminescence of Er3+ and Yb3+ co-doped germanate glass
Frequency upconversion into green and red luminescence in Er3+ and Yb3+ co-doped germanate glass pumped with a 978nm diode laser was presented. With increasing the excitation density, the green upconversion emission intensity was enhanced relative to the red one. Based on the emission spectra and th...
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Published in | Journal of non-crystalline solids Vol. 347; no. 1-3; pp. 52 - 55 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
01.11.2004
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | Frequency upconversion into green and red luminescence in Er3+ and Yb3+ co-doped germanate glass pumped with a 978nm diode laser was presented. With increasing the excitation density, the green upconversion emission intensity was enhanced relative to the red one. Based on the emission spectra and the excitation density dependence of the upconversion emission intensity, we attributed the change of the upconversion emission spectra to the enhancement of three-photon excitation process to produce green luminescence with increasing the excitation density. The effects of this three-photon process on the 1.54μm emission were also discussed. |
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ISSN: | 0022-3093 1873-4812 |
DOI: | 10.1016/j.jnoncrysol.2004.08.268 |