Conical Bessel-like pulses allow control of the propagation velocity of the main intensity peak.With few-cycle pulses, this leads to a controllable shearing effect with respect to the carrier-phase oscillation and a consequent variation of the instantaneous intensity during propagation. Numerical simulations highlight how this intensity modulation directly controls the atomic dipole phase in the process of high-order harmonic generation and isolates either the long or the short electron-trajectory contributions. We identify a propagation regime in which the harmonic field takes the form of an isolated pulse of 300 as duration

Carrier-envelope shearing and isolated attosecond pulse generation

FACCIO, DANIELE FRANCO ANGEL;DI TRAPANI, PAOLO
2011

Abstract

Conical Bessel-like pulses allow control of the propagation velocity of the main intensity peak.With few-cycle pulses, this leads to a controllable shearing effect with respect to the carrier-phase oscillation and a consequent variation of the instantaneous intensity during propagation. Numerical simulations highlight how this intensity modulation directly controls the atomic dipole phase in the process of high-order harmonic generation and isolates either the long or the short electron-trajectory contributions. We identify a propagation regime in which the harmonic field takes the form of an isolated pulse of 300 as duration
A., Lotti; Faccio, DANIELE FRANCO ANGEL; A., Couairon; M. B., Gaarde; DI TRAPANI, Paolo
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11383/1790128
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