Abstract

Efficient emission at 1.38μm wavelength from holmium (Ho3+)-doped low-phonon-energy gallate bismuth lead (GBL) oxide glasses, owing to the Ho3+: (S25,F45)I55 transition, was observed, and the stimulated emission cross section was calculated to be 2.4×1021cm2. Population inversions between the (S25,F45) and I55 levels have been achieved, and a broad gain bandwidth from 1350to1450nm was obtained. The large product of emission cross section and measured lifetime also support this characteristic. The results indicate that a Ho3+-doped GBL glass system is a promising candidate for the development of E-band (13601460nm) fiber-optic amplifiers.

© 2010 Optical Society of America

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