Butler, T., Gerz, D., Hofer, C., Xu, J., Gaida, C., Heuermann, T., et al. (2019). Watt-scale 50-MHz source of single-cycle waveform-stable pulses in the molecular fingerprint region. Optics Letters, 44(7), 1730-1733. doi:10.1364/OL.44.001730.