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Proceedings Paper

Powerful 2-μm all-fiber laser sources pumped by Raman fiber lasers
Author(s): Xiong Wang; Pu Zhou; Hanwei Zhang; Xiaoxi Jin; Xiaolin Wang; Hu Xiao; Zejin Liu
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Paper Abstract

We present novel and powerful pump schemes for fiber laser sources operating near 2 μm, which employing high power Raman fiber lasers (RFLs) to provide sufficient pump light. Firstly, we demonstrate a Tm-doped fiber laser (TDFL) pumped by two RFLs at 1173 nm. The output power of the TDFL reached 96 W with slope efficiency of 0.42, and the central wavelength located at 1943.3 nm. This is the first TDFL with 100 W-level output power pumped by RFLs around Tm3+ ions’ ~1200 nm absorption band. Secondly, we demonstrate a Ho-doped fiber laser (HDFL) employing a 1150 nm RFL as pump source. The 1150 nm RFL provided 110 W pump power and the output power of the HDFL reached 42 W with slope efficiency of 0.37. The lasing wavelength covered from 2046.8 nm to 2049.5 nm with optical signal-to-noise ratio more than 30 dB. This is the first HDFL pumped by a 1150 nm RFL and the highest output power achieved at this pump band. In the last, we present a high power Ho-doped fiber (HDF) superfluorescent source (SS) pumped by a 1150 nm RFL. The SS’s output power reached 1.5 W, and the full width at half maximum was about 30 nm. This is the highest output power achieved in HDF as far as we know. The results above indicate promising and powerful pump schemes to achieve higher power output in fiber lasers near 2 μm, which also can be further improved by optimizing the parameters of the sources.

Paper Details

Date Published: 18 November 2014
PDF: 12 pages
Proc. SPIE 9266, High-Power Lasers and Applications VII, 92660G (18 November 2014); doi: 10.1117/12.2074579
Show Author Affiliations
Xiong Wang, National Univ. of Defense Technology (China)
Pu Zhou, National Univ. of Defense Technology (China)
Hanwei Zhang, National Univ. of Defense Technology (China)
Xiaoxi Jin, National Univ. of Defense Technology (China)
Xiaolin Wang, National Univ. of Defense Technology (China)
Hu Xiao, National Univ. of Defense Technology (China)
Zejin Liu, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 9266:
High-Power Lasers and Applications VII
Ruxin Li; Upendra N. Singh; Robert F. Walter, Editor(s)

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