Abstract

This Letter reports intense emission at 2.7μm and broadband emission at 2.0μm from Er3+/Tm3+/Ho3+-doped fluorophosphate glass. The fluorescence characteristics and energy transfer upon excitation of a conventional 980nm laser diode are investigated. Based on the fluorescence spectra and lifetime measurement, the effect of Tm3+ and Ho3+ ions on intense 2.7μm emission in fluorophosphate glass is demonstrated. It is also found that the effective bandwidth of 2.0μm emission due to Tm3+ and Ho3+ ions can reach as high as 196nm. These results indicate that the advantageous spectroscopic characteristics of Er3+/Tm3+/Ho3+ triply doped fluorophosphate glass together with the outstanding thermal properties may become an attractive host for the mid-IR solid state lasers.

© 2011 Optical Society of America

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