6533b836fe1ef96bd12a0b10
RESEARCH PRODUCT
A three-colour scheme to generate isolated attosecond pulses
Pietro Paolo CorsoEmilio FiordilinoF. PersicoGianfranco Orlandosubject
PhysicsSettore FIS/02 - Fisica Teorica Modelli E Metodi MatematiciField (physics)business.industryAttosecondAttosecond pulses lasersCondensed Matter PhysicsLaserAtomic and Molecular Physics and OpticsSettore FIS/03 - Fisica Della Materialaw.inventionWavelengthFull width at half maximumOpticslawElectric fieldAtombusinessEnvelope (waves)description
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-12-21 |