A method to generate a single sub-50-as pulse by employing a 5-fs laser pulse with intensity above the saturation intensity, was proposed. The neon target medium of 0.5 mm length and 5 Torr pressure, was placed 10 mm beyond the laser focus. Harmonic radiation from neon atoms, was obtained by solving the time-dependent Schrödinger equation coupled with Maxwell equations. The results show that the positive chirp contained in the broad continuum radiation can be compensated by an x-ray filter with a negative group delay dispersion in the spectral region of interest.
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Date
Single sub-50-attosecond pulse generation from chirp-compensated harmonic radiation using material dispersion
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract
2004
Description
Keywords
Harmonic generation, High energy lasers, Ionization, Light absorption, Light propagation, Light transmission, Maxwell equations, Neon, Optical filters, Refractive index, X rays, Harmonic radiation, Linear frequency chirp, Single attosecond pulses, X ray filters, Laser pulses
Citation
Physical Review A - Atomic, Molecular, and Optical Physics, 2004, 69, 0.208333333333333, pp. 1-51805