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Indexed by:期刊论文

Date of Publication:2010-04-01

Journal:CHINESE PHYSICS B

Included Journals:SCIE、EI、ISTIC

Volume:19

Issue:4

ISSN No.:1674-1056

Key Words:Er3+:Yb3+:Tm3+ co-doped borosilicate glasses; up-conversion emission; two pump wavelengths; optimum pump power

Abstract:Yb3+:Er3+:Tm3+ co-doped borosilicate glasses are prepared. Their strong up-conversion photoluminescence spectra in a range from ultra-violet to near-infrared, which are excited by a 978-nm laser diode, are measured, and the mechanisms of energy transfer among Yb3+, Er3+ and Tm3+ ions are discussed. The results show that there is an unexpected wavelength at 900-nm emission from Yb3+ Stark splitting levels to pump Tm3+ ions and there exists an optimum pump power. The concentration of the Tm3+ dopant gives rise to a prominent effect on the intensity of visible and near-infrared emissions for the Yb3+:Er3+:Tm3+ co-doped borosilicate glasses.