Journal
OPTICS LETTERS
Volume 44, Issue 7, Pages 1730-1733Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.44.001730
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- Munich-Centre for Advanced Photonics (MAP)
- Deutsche Forschungsgemeinschaft (DFG) [KR4768/1-1]
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We report a coherent mid-infrared (MIR) source with a combination of broad spectral coverage (6-18 mu m), high repetition rate (50 MHz), and high average power (0.5 W). The waveform-stable pulses emerge via intrapulse difference-frequency generation (IPDFG) in a GaSe crystal, driven by a 30-W average-power train of 32-fs pulses spectrally centered at 2 mu m, delivered by a fiber-laser system. Electro-optic sampling (EOS) of the waveform-stable MIR waveforms reveals their single-cycle nature, confirming the excellent phase matching both of IPDFG and of EOS with 2-mu m pulses in GaSe. (C) 2019 Optical Society of America
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