Watt-scale 50-MHz source of single-cycle waveform-stable pulses in the molecular fingerprint region
Optics Letters 44(7): 1730-1730
Article 2019 English
Authors
TB
T. Butler
DG
Daniel Gerz
CH
Christina Höfer
Abstract
1 min read
We report a coherent mid-infrared (MIR) source with a combination of broad spectral coverage (6-18 μm), high repetition rate (50 MHz), and high average power (0.5 W).The waveform-stable pulses emerge via intrapulse differencefrequency generation (IPDFG) in a GaSe crystal, driven by a 30-W-average-power train of 32-fs pulses spectrally centered at 2 μm, 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-μm pulses in GaSe.
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