A new scheme to generate isolated attosecond pulses is presented that involves the use of a laser field and of a unipolar field. The laser field has a pulse of intensity I¼1.5 1014Wcm 2 and wavelength ¼820 nm. The unipolar pulse is an asymmetric pulse consisting of a sharp peak, lasting approximately half a laser period, i.e. nearly 1.4 fs, followed by a long and shallow tail. We show that on combining these two fields, it is possible to generate isolated attosecond pulses as short as 1/10 of a laser period, i.e. approximately 270 as. Moreover, it is argued that this scheme is robust either against small variations of the laser envelope, or against small changes in the delay between the laser pump and the unipolar pulse.

Orlando, G., Corso, P.P., Fiordilino, E., Persico, F.S. (2009). Generation of isolated attosecond pulses using unipolar and laser fields. JOURNAL OF MODERN OPTICS, 56, 1761-1767 [10.1080/0950034903277800].

Generation of isolated attosecond pulses using unipolar and laser fields

ORLANDO, Gianfranco;CORSO, Pietro Paolo;FIORDILINO, Emilio;PERSICO, Francesco Saverio
2009-01-01

Abstract

A new scheme to generate isolated attosecond pulses is presented that involves the use of a laser field and of a unipolar field. The laser field has a pulse of intensity I¼1.5 1014Wcm 2 and wavelength ¼820 nm. The unipolar pulse is an asymmetric pulse consisting of a sharp peak, lasting approximately half a laser period, i.e. nearly 1.4 fs, followed by a long and shallow tail. We show that on combining these two fields, it is possible to generate isolated attosecond pulses as short as 1/10 of a laser period, i.e. approximately 270 as. Moreover, it is argued that this scheme is robust either against small variations of the laser envelope, or against small changes in the delay between the laser pump and the unipolar pulse.
2009
Settore FIS/02 - Fisica Teorica, Modelli E Metodi Matematici
Settore FIS/03 - Fisica Della Materia
Orlando, G., Corso, P.P., Fiordilino, E., Persico, F.S. (2009). Generation of isolated attosecond pulses using unipolar and laser fields. JOURNAL OF MODERN OPTICS, 56, 1761-1767 [10.1080/0950034903277800].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/44771
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