Generation of sub-two-cycle CEP-stable optical pulses at 3.5 μm by multiple-plate pulse compression for high-harmonic generation in crystalsXia Peiyu, Lu Faming, Ishii Nobuhisa, Kanai Teruto and Itatani JiroEPJ Web Conf., 205 (2019) 01006DOI: https://doi.org/10.1051/epjconf/201920501006