Thulium sensitised holmium-doped CW fluoride fibre laser of high efficiency
- 19 November 1992
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 28 (24) , 2231-2232
- https://doi.org/10.1049/el:19921433
Abstract
CW operation of extremely high efficiency has been observed from the 2.024 μm transition of holmium in a Tm: Ho codoped singlemode fluoride fibre laser. By pumping into thulium absorption between 820 and 830 nm, output powers of 250 mW and maximum slope efficiencies of 60 % were observed. These results suggest that pump quantum, and photon conversion efficiencies of 150 and 75 % respectively, are readily attainable.Keywords
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