Numerical modelling of the spatial profiles of high-order harmonics
- 14 December 1994
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 27 (23) , 5693-5706
- https://doi.org/10.1088/0953-4075/27/23/013
Abstract
The far-field spatial distributions of high-order harmonics in an ionized medium have been investigated using a computer model that includes both the single atom effects and the collective effects of the medium. The results show that depletion of the non-linear medium due to ionization and radial phase variations across the gas jet cause broadening and complicated structures in the far-field spatial distributions. These phase variations are due to three factors: focusing, ionization, i.e. depletion of the non-linear medium and electron dispersion, and intensity-dependent phase variations of the atomic dipoles.Keywords
This publication has 8 references indexed in Scilit:
- Time-resolved harmonic generation in an ionizing gasJournal of Physics B: Atomic, Molecular and Optical Physics, 1994
- Spatial profiles of high-order harmonics generated by a femtosecond Cr:LiSAF laserJournal of Physics B: Atomic, Molecular and Optical Physics, 1994
- Bandwidths of octahedrally coordinated in garnetPhysical Review B, 1994
- Calculations of high-order-harmonic generation in the strongly ionizing regimePhysical Review A, 1993
- Calculations of high-order harmonic-generation processes in xenon at 1064 nmPhysical Review A, 1992
- Theoretical aspects of intense field harmonic generationJournal of Physics B: Atomic, Molecular and Optical Physics, 1991
- Scale variation in a one-dimensional model of an atom interacting with a strong laser fieldPhysical Review A, 1990
- Light Waves at the Boundary of Nonlinear MediaPhysical Review B, 1962