期刊
OPTICS LETTERS
卷 43, 期 12, 页码 2953-2956出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.43.002953
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- Helmholtz-Gemeinschaft (HGF) [VH-NG-804]
- Helmholtz-CAS Joint Research Group [HCJRG 201]
- Hamburg Centre for Ultrafast Imaging-Structure, Dynamics and Control of Matter at the Atomic Scale of the Deutsche Forschungsgemeinschaft (DFG) [EXC 1074]
We demonstrate a high-power offset-free ultrafast mid-infrared (IR) laser source based on difference-frequency generation (DFG). Powerful signal pulses are obtained by filtering the rightmost spectral lobe of the optical spectra broadened by fiber-optic nonlinearities dominated by self-phase modulation. The resulting mid-IR pulses are tunable from 7 to 18 mu m with up to 5.4 mW average power. We experimentally and numerically investigate power scaling of this DFG source and demonstrate that increasing the signal power is an efficient approach for generating high-power mid-IR pulses. (C) 2018 Optical Society of America
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