A three-colour scheme to generate isolated attosecond pulses

Risultato della ricerca: Articlepeer review

Abstract

We propose a new scheme to produce isolated attosecond pulses, involving the use of three laser pulses: a fundamental laser field of intensity I = 3.5 × 1014 W cm−2 and of wavelength λ = 820 nm, and two properly chosen weak lasers with wavelengths 1.5λ and 0.5λ. The three lasers have a Gaussian envelope of 36 fs full width at half maximum. The resulting total field is an asymmetric electric field with an isolated peak. We show that a model atom, interacting with the above-defined total field, generates an isolated attosecond pulse as short as 1/10 of a laser period, i.e. approximately 270 as.
Lingua originaleEnglish
pagine (da-a)025602-025608
Numero di pagine7
RivistaJOURNAL OF PHYSICS. B, ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume43
Stato di pubblicazionePublished - 2009

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