@article{oai:repo.qst.go.jp:00084424,
 author = {Yasuyuki, Sanari and Fumiya, Sekiguchi and Kotaro, Nakagawa and Nobuhisa, Ishii and Yoshihiko, Kanemitsu and Hideki, Hirori and Nobuhisa, Ishii},
 issue = {20},
 journal = {Optics Letters},
 month = {Oct},
 note = {We demonstrate a compact and tunable mid-infrared light source that provides carrier-envelope-phase (CEP)-locked pulses at repetition rates from 500 Hz to 10 kHz. The seed pulses were generated by intra-pulse difference frequency mixing of the output of an Yb:KGW regenerative amplifier that had been spectrally broadened by continuum generation using multiple plates. Then, a two-stage optical parametric amplifier was used to obtain output energies of about 100 uJ/pulse for center wavelengths between 2.8 and 3.5 um. Owing to the intense pulse energies, it was possible to compress the multi-cycle pulses down to two-cycle pulses using YAG and Si plates.},
 pages = {5280--5283},
 title = {Generation of wavelength-tunable few-cycle pulses in the mid-infrared at repetition rates up to 10 kHz},
 volume = {46},
 year = {2021}
}