期刊
OPTICS EXPRESS
卷 27, 期 6, 页码 8745-8755出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.27.008745
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资金
- Ministerio de Economia y Competitividad [MAT2016-75716-C2-1-R, TEC 2014-55948-R, FIS2017-87970]
- Consejeria de Educacion, Junta de Castilla y Leon [UIC016, SA046U16]
- Agencia de Gestio d'Ajuts Universitaris i de Recerca [2017SGR755]
- Horizon 2020 Framework Programme [747055]
We report the generation of mid-infrared (similar to 2 mu m) high repetition rate (MHz) sub-100 ns pulses in buried thulium-doped monoclinic double tungstate Crystalline waveguide lasers using two-dimensional saturable absorber materials, graphene and MoS2. The waveguide (propagation losses of similar to 1 dB/cm) was micro-fabricated by means of ultrafast femtosecond laser writing. In the continuous-wave regime, the waveguide laser generated 247 mW at 1849.6 rim with a slope efficiency of 48.7%. The laser operated at the fundamental transverse mode with a linearly polarized output. With graphene as a saturable absorber the pulse characteristics were 88 ns / 18 tri (duration / energy) at a repetition rate of 1.39 MHz. Even shorter pulses of 66 ns were achieved with MoS2 Graphene and MoS2 are therefore promising for high repetition rate nanosecond Q-switched infrared waveguide lasers. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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