Results 41 to 50 of about 261,800 (180)
Theory of high-order harmonic generation for gapless graphene
New Journal of Physics, 2018 We study the high-harmonic spectrum emitted by a single-layer graphene, irradiated by an ultrashort intense infrared laser pulse. We show the emergence of the typical non-perturbative spectral features, harmonic plateau and cut-off, for mid-infrared ...
Óscar Zurrón +2 more
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High-order harmonic generation at high laser intensities beyond the tunnel regime
, 2014 We present studies of high-order harmonic generation (HHG) at laser intensities well above saturation. We use driving laser pulses which present a particular electron dynamics in the turn-on stage. Our results predict an increasing on the harmonic yield,
Ciappina, M. F. +4 more
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Highly efficient XUV generation via high-order frequency mixing
New Journal of Physics, 2020 The efficient generation of the coherent XUV light via frequency conversion of intense laser drivers is a problem of both fundamental and technological importance.
M A Khokhlova, V V Strelkov
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Laser-induced bound-state phases in high-order harmonic generation
, 2012 We present single-molecule and macroscopic calculations showing that laser-induced Stark shifts contribute significantly to the phase of high-order harmonics from polar molecules.
Etches, Adam +2 more
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Attosecond dynamics of light-induced resonant hole transfer in high-order-harmonic generation [PDF]
, 2017 We present a study of high-order-harmonic generation (HHG) assisted by extreme ultraviolet (XUV) attosecond pulses, which can lead to the excitation of inner-shell electrons and the generation of a second HHG plateau.
Dahlström, Jan Marcus +2 more
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Extreme Nonlinear Optics in a Femtosecond Enhancement Cavity
, 2011 Intrinsic to the process of high-order harmonic generation is the creation of plasma and the resulting spatiotemporal distortions of the driving laser pulse.
A. Cingöz +4 more
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Carrier-wave Rabi flopping signatures in high-order harmonic generation for alkali atoms [PDF]
, 2015 We present the first theoretical investigation of carrier-wave Rabi flopping in real atoms by employing numerical simulations of high-order harmonic generation (HHG) in alkali species.
Ciappina, M. F. +6 more
core +3 more sources
Time-gated high-order harmonic generation [PDF]
Physical Review A, 2003 We generate high-order harmonics by using an 800-nm fundamental pulse whose polarization evolves with time. Controlling the ellipticity modulation of the fundamental field allows us to continuously confine the harmonic emission from an estimated minimum value of 7 fs $(1\mathrm{fs}{=10}^{\ensuremath{-}15}\mathrm{s})$ up to more than the 35 fs input ...
O. Tcherbakoff +4 more
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High-order harmonic generation traces ultrafast coherent phonon dynamics in ZnO [PDF]
EPJ Web of Conferences, 2019 Ultrafast coherent phonon dynamics in ZnO is studied via high-order harmonic generation by intense mid-IR laser pulses. We show, the phonon dynamic is very different after excitation in the tunnel and multiphoton regime.
Hollinger Richard +6 more
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Enhancing narrowband high order harmonic generation by Fano resonances
, 2014 Resonances in the photo-absorption spectrum of the generating medium can modify the spectrum of high order harmonics. In particular, window-type Fano resonances can reduce photo-absorption within a narrow spectral region and, consequently, lead to an ...
Demmler, Stefan +6 more
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