The dynamics of a one-dimensional atom driven by three-laser fields is investigated. The total electric field is made up of a fundamental laser field of intensity âWâcmâ2 and wavelength λâ=â820ânm and two weak lasers with larger wavelengths. The intensity of the two weak fields is with kâ=â0.25. The frequencies of the weak fields are and , with and . The three lasers have a Gaussian envelope of 72âfs FWHM. It is shown, by numerical computation and using the semiclassical theory of high-harmonic generation, that the atom interacting with this combined field is able to emit an isolated attosecond burst of radiation.View full textDownload full textKeywordsHHG, attosecond pulseRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/09500340.2010.519834
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