241 citations · 1.3k across the 19 of their papers we have counts for
19 papers
Ultrafast electron localization and screening in a transition metal dichalcogenide
Z. Schumacher, S. A. Sato, S. Neb +4
The coupling of light to electrical charge carriers in semiconductors is the foundation of many technological applications. Attosecond transient absorption spectroscopy measures si…
High-power few-cycle near-infrared OPCPA for soft X-ray generation at 100 kHz
Stefan Hrisafov, Justinas Pupeikis, Pierre-Alexis Chevreuil +4
We present a near-infrared optical parametric chirped-pulse amplifier (OPCPA) and soft X-ray (SXR) high-harmonic generation system. The OPCPA produces few-cycle pulses at a center…
Water window soft x-ray source enabled by 25-W few-cycle mid-IR OPCPA at 100 kHz
Justinas Pupeikis, Pierre-Alexis Chevreuil, Nicolas Bigler +3
Coherent soft x-ray (SXR) sources enable fundamental studies in the important water window spectral region. Until now, such sources have been limited to repetition rates of 1 kHz o…
Attosecond screening dynamics mediated by electron-localization
M. Volkov, S. A. Sato, F. Schlaepfer +6
Transition metals with their densely confined and strongly coupled valence electrons are key constituents of many materials with unconventional properties, such as high-Tc supercon…
Role of intra-band transitions in photo-carrier generation
Shunsuke A. Sato, Matteo Lucchini, Mikhail Volkov +4
We theoretically investigate the role of intra-band transitions in laser-induced carrier-generation for different photon energy regimes: (i) strongly off-resonant, (ii) multi-photo…
Interplay between Coulomb-focusing and non-dipole effects in strong-field ionization with elliptical polarization
J. Maurer, B. Willenberg, B. W. Mayer +7
Strong-field ionization and rescattering beyond the long-wavelength limit of the dipole approximation is studied with elliptically polarized mid-IR pulses. We have measured the ful…