Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2010-04-01

Journal: CHINESE PHYSICS B

Included Journals: ISTIC、EI、SCIE

Volume: 19

Issue: 4

ISSN: 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.