Positive influence of Sm3+ ion on the ~ 2.85 µm emission in Yb3+/Ho3+ co-doped silica-germanate glass

Abstract : In present work, a novel sensitized ion Sm3+ activated Yb3+/Ho3+ co-doped silica-germanate glasses have been synthesized by melt quenching method. Absorption spectra and mid-infrared photo-luminescence of prepared glasses were characterized and compared in parallel. Quintuple enhancement of ~ 2.85 µm emission was achieved successfully in Yb3+/Ho3+ co-doped silica-germanate glass with 0.3 mol% Sm3+ addition, which also possesses a large stimulated emission cross section (14.9 × 10–21 cm2). Sensitized effect of Sm3+ and efficient energy transfer (ET) mechanism of Ho3+5I7→Sm3+6H13/2 in the co-doped silica-germanate glasses were investigated under 980 nm laser diode excitation. Moreover, decay profiles of Ho3+5I7 level were measured to further examine the high ET efficiency (η) of Ho3+5I7 to Sm3+6H13/2, which confirmed the efficient population inversion of Ho3+ ~ 2.85 µm emission. All results indicate that the Yb3+/Ho3+/Sm3+ tri-doped silica-germanate glass is a promising candidate material for improving the Ho3+ ~ 2.85 µm fiber laser performance. © 2018 Elsevier B.V.
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Submitted on : Wednesday, June 6, 2018 - 2:15:47 PM
Last modification on : Wednesday, October 2, 2019 - 2:12:04 PM

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W. Cao, T. Wang, F. Huang, R. Ye, X.-H. Zhang, et al.. Positive influence of Sm3+ ion on the ~ 2.85 µm emission in Yb3+/Ho3+ co-doped silica-germanate glass. Journal of Luminescence, Elsevier, 2018, 201, pp.98-103. ⟨10.1016/j.jlumin.2018.04.045⟩. ⟨hal-01809162⟩

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