Monoclinic Tm3+:MgWO4: a promising crystal for continuous-wave and passively Q-switched lasers at similar to 2 mu m

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Monoclinic thulium-doped magnesium monotungstate, Tm3+ :MgWO4, is promising for efficient power-scalable continuous-wave (CW) and passively Q-switched lasers at > 2 mu m. Under diode pumping at 802 nm, a compact CW laser based on Z-cut Tm: MgWO4 generated 3.09 W at 2022-2034 nm with a slope efficiency of 50% which represents the highest output power ever achieved with this type of laser host. Stable passive Q-switching of the Tm: MgWO4 laser is demonstrated for the first time, to the best of our knowledge, using single-walled carbon nanotubes, graphene, and Cr2+:ZnS saturable absorbers. Using the latter, the best performance is achieved with 16.1 mu J/13.6 ns pulses at 2017.8 nm with a maximum average output power of 0.87 W and a peak power of 1.18 kW. (C) 2017 Optical Society of America
Publisher
OPTICAL SOC AMER
Issue Date
2017-03
Language
English
Article Type
Article
Keywords

SATURABLE ABSORBER; GROWTH; CERAMICS; GRAPHENE; ENERGY

Citation

OPTICS LETTERS, v.42, no.6, pp.1177 - 1180

ISSN
0146-9592
DOI
10.1364/OL.42.001177
URI
http://hdl.handle.net/10203/223499
Appears in Collection
PH-Journal Papers(저널논문)
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