期刊:Electronics Letters [Institution of Engineering and Technology] 日期:1991-08-15卷期号:27 (17): 1513-1515被引量:32
标识
DOI:10.1049/el:19910951
摘要
Laser oscillation at 2.04 μm has been observed in a thulium-sensitised holmium doped singlemode fluorozirconate fibre. 52% slope efficiency and 250 mW output power were obtained with a pump at 0.82 μm. Crossrelaxation in thulium gives a pump quantum efficiency of 1.30.