New class of fibre laser based on lead-germanate glass

21 May 1992

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 28 (11) , 1021-1022
https://doi.org/10.1049/el:19920648

Abstract

The first fibre laser based on rare-earth doped lead-germanate glass is reported. The thulium-doped fibre had a background loss of 2dBm⁻¹ and a maximum phonon energy of ̃920cm⁻¹. Lasing was achieved on the Tm³⁺³H₄ – ³H₆ transition at 1.905μm with a 3.6 mW threshold, when diode-pumped at 790 nm. A quantum efficiency of 30% was obtained.

Keywords

GEO2-PBO-BAO-ZNO-K2O:TM3+
PHONON ENERGY
THRESHOLD
QUANTUM EFFICIENCY
3.6 MW
GPBZK
1.905 MICRON
790 NM
FIBRE LASER
BACKGROUND LOSS
3H4-3H6 TRANSITION
30 PERCENT

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