Results 61 to 70 of about 261,800 (180)

High order harmonic generation in solids: a review on recent numerical methods

open access: yesAdvances in Physics: X, 2019
Interaction of intense lasers with solid materials offers an alternative way to achieve high-order harmonic generation (HHG). Since the underlying mechanisms of the harmonic emission remain uncertain, a large number of theoretical studies have been ...
Chao Yu, Shicheng Jiang, Ruifeng Lu
doaj   +1 more source

High-order harmonic generation from polyatomic molecules including nuclear motion and a nuclear modes analysis

open access: yes, 2010
We present a generic approach for treating the effect of nuclear motion in the high-order harmonic generation from polyatomic molecules. Our procedure relies on a separation of nuclear and electron dynamics where we account for the electronic part using ...
C. B. Madsen   +6 more
core   +1 more source

Interference-Induced Phenomena in High-Order Harmonic Generation from Bulk Solids

open access: yesApplied Sciences, 2019
We consider a quantum mechanical model for the high-order harmonic generation in bulk solids. The bandgap is assumed to be considerably larger than the exciting photon energy.
Viktor Szaszkó-Bogár   +3 more
doaj   +1 more source

On the recombination in high-order harmonic generation in molecules

open access: yes, 2004
We show that the dependence of high-order harmonic generation (HHG) on the molecular orientation can be understood within a theoretical treatment that does not involve the strong field of the laser.
B. Lohmann   +7 more
core   +1 more source

Theory of high-order harmonic generation from molecules by intense laser pulses

open access: yes, 2008
We show that high-order harmonics generated from molecules by intense laser pulses can be expressed as the product of a returning electron wave packet and the photo-recombination cross section (PRCS) where the electron wave packet can be obtained from ...
Anh-Thu Le   +10 more
core   +1 more source

Polarization Angle Effect on High-Order Harmonic Generation in an Inhomogeneous Two-Color Laser Field

open access: yesIndonesian Journal of Applied Physics
Theoretical investigation of the effect of the polarization angle on high-order harmonic generation in an inhomogeneous two-color field is reported.
Stephen Maina Njoroge
doaj   +1 more source

Laser Requirements for High-Order Harmonic Generation by Relativistic Plasma Singularities

open access: yesQuantum Beam Science, 2018
We discuss requirements on relativistic-irradiance (I0 > 1018 W/cm2) high-power (multi-terawatt) ultrashort (femtosecond) lasers for efficient generation of high-order harmonics in gas jet targets in a new regime discovered recently (Pirozhkov et al.,
Alexander S. Pirozhkov   +21 more
doaj   +1 more source

Optimal control theory of harmonic generation

open access: yes, 2012
Coherent control of harmonic generation was studied theoretically. A specific harmonic order was targeted. An optimal control theory was employed to find the driving field where restrictions were imposed on the frequency band.
Kosloff, Ronnie, Schaefer, Ido
core   +1 more source

High-order harmonic generation from hybrid organic–inorganic perovskite thin films

open access: yesAPL Materials, 2019
The generation of high-order harmonics from hybrid organic–inorganic perovskites (HOIPs) is demonstrated by the excitation with a strong mid-infrared laser pulse.
Hideki Hirori   +12 more
doaj   +1 more source

Polarization-resolved analysis of high-order harmonic generation in monolayer MoS2

open access: yesNew Journal of Physics, 2020
We employ a theoretical model based on the density-matrix equation in the velocity gauge to calculate high harmonic generation from monolayer MoS _2 .
Candong Liu   +3 more
doaj   +1 more source

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