Controlling polarization of attosecond pulses with plasmonic-enhanced bichromatic counter-rotating circularly polarized fields

TY - JOUR

T1 - Controlling polarization of attosecond pulses with plasmonic-enhanced bichromatic counter-rotating circularly polarized fields

AU - Ansari, Irfana N.

AU - Hofmann, Cornelia

AU - Medišauskas, Lukas

AU - Lewenstein, Maciej

AU - Ciappina, Marcelo F.

AU - Dixit, Gopal

PY - 2021/1/11

Y1 - 2021/1/11

N2 - The use of bichromatic counter-rotating laser field is known to generate high-order harmonics with nonzero ellipticity. By combining such laser field with a plasmonic-enhanced spatially inhomogeneous field, we propose a way to influence the subcycle dynamics of the high-harmonic generation process. Using the numerical solution of the time-dependent Schrödinger equation combined with classical trajectory Monte Carlo simulations, we show that the change of the direction and the strength of the plasmonic field selectively enhances or suppresses certain recombining electron trajectories. This in turn modifies the ellipticity of the emitted attosecond pulses.

AB - The use of bichromatic counter-rotating laser field is known to generate high-order harmonics with nonzero ellipticity. By combining such laser field with a plasmonic-enhanced spatially inhomogeneous field, we propose a way to influence the subcycle dynamics of the high-harmonic generation process. Using the numerical solution of the time-dependent Schrödinger equation combined with classical trajectory Monte Carlo simulations, we show that the change of the direction and the strength of the plasmonic field selectively enhances or suppresses certain recombining electron trajectories. This in turn modifies the ellipticity of the emitted attosecond pulses.

U2 - 10.1103/physreva.103.013104

DO - 10.1103/physreva.103.013104

M3 - 文章

SN - 2469-9926

VL - 103

JO - Physical Review A

JF - Physical Review A

IS - 1

ER -