Explicit formulation of second and third order optical nonlinearity in the FDTD framework

C Varin, R Emms, G Bart, T Fennel, T Brabec - Computer physics …, 2018 - Elsevier
The finite-difference time-domain (FDTD) method is a flexible and powerful technique for
rigorously solving Maxwell's equations. However, three-dimensional optical nonlinearity in …

Interplay of pulse duration, peak intensity, and particle size in laser-driven electron emission from silica nanospheres

JA Powell, AM Summers, Q Liu, SJ Robatjazi… - Optics express, 2019 - opg.optica.org
We present the results of a systematic study of photoelectron emission from isolated
dielectric nanoparticles (SiO_2) irradiated by intense 25 fs, 780? nm linearly polarized laser …

Strong-field ionization of plasmonic nanoparticles

E Saydanzad, J Li, U Thumm - Physical Review A, 2022 - APS
We modeled strong-field ionization of metal nanoparticles by intense infrared laser pulses,
accounting for and distinguishing in photoelectron (PE) momentum distributions the effects …

Nanoscale subsurface dynamics of solids upon high-intensity femtosecond laser irradiation observed by grazing-incidence x-ray scattering

L Randolph, M Banjafar, TR Preston, T Yabuuchi… - Physical Review …, 2022 - APS
Observing ultrafast laser-induced structural changes in nanoscale systems is essential for
understanding the dynamics of intense light-matter interactions. For laser intensities on the …

Saturable Lorentz model for fully explicit three-dimensional modeling of nonlinear optics

C Varin, G Bart, R Emms, T Brabec - Optics express, 2015 - opg.optica.org
Inclusion of the instantaneous Kerr nonlinearity in the FDTD framework leads to implicit
equations that have to be solved iteratively. In principle, explicit integration can be achieved …

Enhanced cutoff energies for direct and rescattered strong-field photoelectron emission of plasmonic nanoparticles

E Saydanzad, J Powell, A Summers, SJ Robatjazi… - …, 2023 - degruyter.com
The efficient generation, accurate detection, and detailed physical tracking of energetic
electrons are of applied interest for high harmonics generation, electron-impact …

XUV fluorescence as a probe of laser-induced helium nanoplasma dynamics

M Sumfleth, A Przystawik, M Namboodiri… - New Journal of …, 2023 - iopscience.iop.org
XUV fluorescence spectroscopy provides information on energy absorption and dissipation
processes taking place in the interaction of helium clusters with intense femtosecond laser …

Influence of excitation and deexcitation processes on the dynamics of laser-excited argon clusters

M Moll, M Schlanges, T Bornath, VP Krainov - Physical Review A, 2015 - APS
The excitation of atomic clusters by intense infrared laser pulses leads to the creation of
highly charged ions and to the emission of energetic photons. These phenomena, which …

Massively parallel microscopic particle-in-cell

G Bart, C Peltz, N Bigaouette, T Fennel… - Computer Physics …, 2017 - Elsevier
The microscopic particle-in-cell (MicPIC) method was developed to model classical light–
matter interaction in strongly-coupled plasma systems. It effectively overcomes the …

Accélération d'électrons à l'aide d'impulsions laser ultrabrèves et fortement focalisées

V Marceau - 2015 - library-archives.canada.ca
Lorsque fortement focalisées, les impulsions laser de haute puissance génèrent des
champs électromagnétiques d'amplitude gigantesque. Ces derniers peuvent être mis à …