TY - JOUR
T1 - ClassSTRONG
T2 - Classical simulations of strong field processes
AU - Ciappina, M. F.
AU - Pérez-Hernández, J. A.
AU - Lewenstein, M.
N1 - Funding Information:
We acknowledge the financial support of the MICINN projects (FIS2008-00784 TOQATA, FIS2008-06368-C02-01, and FIS2010-12834), ERC Advanced Grant QUAGATUA , EU IP SIQS, the Alexander von Humboldt Foundation, and the Hamburg Theory Prize (M.L.). This research has been partially supported by Fundació Privada Cellex. J. A. P.-H. acknowledges support from Spanish MINECO through the Consolider Program SAUUL (CSD2007-00013) and research project FIS2009-09522, from Junta de Castilla y León through the Program for Groups of Excellence (GR27) and from the ERC Seventh Framework Programme (LASERLAB-EUROPE, Grant No. 228334 ). We thank Samuel Marskon for useful comments and remarks.
PY - 2014/1
Y1 - 2014/1
N2 - A set of Mathematica functions is presented to model classically two of the most important processes in strong field physics, namely high-order harmonic generation (HHG) and above-threshold ionization (ATI). Our approach is based on the numerical solution of the Newton-Lorentz equation of an electron moving on an electric field and takes advantage of the symbolic languages features and graphical power of Mathematica. Like in the Strong Field Approximation (SFA), the effects of atomic potential on the motion of electron in the laser field are neglected. The SFA was proven to be an essential tool in strong field physics in the sense that it is able to predict with great precision the harmonic (in the HHG) and energy (in the ATI) limits. We have extended substantially the conventional classical simulations, where the electric field is only dependent on time, including spatial nonhomogeneous fields and spatial and temporal synthesized fields. Spatial nonhomogeneous fields appear when metal nanosystems interact with strong and short laser pulses and temporal synthesized fields are routinely generated in attosecond laboratories around the world. Temporal and spatial synthesized fields have received special attention nowadays because they would allow to exceed considerably the conventional harmonic and electron energy frontiers. Classical simulations are an invaluable tool to explore exhaustively the parameters domain at a cheap computational cost, before massive quantum mechanical calculations, absolutely indispensable for the detailed analysis, are performed.
AB - A set of Mathematica functions is presented to model classically two of the most important processes in strong field physics, namely high-order harmonic generation (HHG) and above-threshold ionization (ATI). Our approach is based on the numerical solution of the Newton-Lorentz equation of an electron moving on an electric field and takes advantage of the symbolic languages features and graphical power of Mathematica. Like in the Strong Field Approximation (SFA), the effects of atomic potential on the motion of electron in the laser field are neglected. The SFA was proven to be an essential tool in strong field physics in the sense that it is able to predict with great precision the harmonic (in the HHG) and energy (in the ATI) limits. We have extended substantially the conventional classical simulations, where the electric field is only dependent on time, including spatial nonhomogeneous fields and spatial and temporal synthesized fields. Spatial nonhomogeneous fields appear when metal nanosystems interact with strong and short laser pulses and temporal synthesized fields are routinely generated in attosecond laboratories around the world. Temporal and spatial synthesized fields have received special attention nowadays because they would allow to exceed considerably the conventional harmonic and electron energy frontiers. Classical simulations are an invaluable tool to explore exhaustively the parameters domain at a cheap computational cost, before massive quantum mechanical calculations, absolutely indispensable for the detailed analysis, are performed.
KW - Above threshold ionization
KW - Classical simulations
KW - High-order harmonics generation
KW - Strong field physics
UR - http://www.scopus.com/inward/record.url?scp=84888133397&partnerID=8YFLogxK
U2 - 10.1016/j.cpc.2013.09.009
DO - 10.1016/j.cpc.2013.09.009
M3 - 文章
AN - SCOPUS:84888133397
SN - 0010-4655
VL - 185
SP - 398
EP - 406
JO - Computer Physics Communications
JF - Computer Physics Communications
IS - 1
ER -