Journal
OPTICS EXPRESS
Volume 23, Issue 14, Pages 18269-18276Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.23.018269
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Funding
- European Commission [287732]
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Ultra-short wavelength operation of a thulium fibre laser is investigated. Through use of core pumping and high feedback efficiency wavelength selection, a continuously-tunable fibre laser source operating from 1660 nm to 1720 nm is demonstrated in a silica host. We discuss the range of applications within this important wavelength band such as polymer materials processing and medical applications targeting characteristic C-H bond resonance peaks. As a demonstration of the power scalability of thulium fibre lasers in this band, fixed wavelength operation at 1726 nm with output power up 12.6 W and with slope efficiency >60% is also shown. (C) 2015 Optical Society of America
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