Generation of attosecond pulses in macroscopic media
- 1 December 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 56 (6), 4960-4969
- https://doi.org/10.1103/physreva.56.4960
Abstract
We describe theoretically the generation of ultrashort (subfemtosecond) pulses using high-order harmonics of a laser pulse with a time-dependent degree of ellipticity. The single-atom response is calculated by using a low-frequency strong-field approximation. Propagation effects are taken into account using a method going beyond the slowly varying envelope approximation. Propagation modifies significantly the results obtained in the single-atom response and, in certain conditions, makes the generation of one attosecond pulse possible. We discuss prospects for the observation of these ultrashort pulses.Keywords
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