TY - JOUR

T1 - Laser driven structured quantum rings

AU - Fiordilino, Emilio

AU - Frusteri, Biagio

AU - Corso, Pietro Paolo

AU - Castiglia, Giuseppe

AU - De Giovannini, Umberto

PY - 2015

Y1 - 2015

N2 - In this work we study harmonic emission from structured quantum rings (SQRs). In SQRs, electrons trapped in two-dimensional structures are further confined by an external potential composed of N scattering centers arranged on a circle. We build a suitable one-dimensional model Hamiltonian describing this class of systems and analytically solve the associated Schödinger equation. We find that the solution can be expressed in terms of Mathieu functions and focus on the specific case of N = 6. By exactly solving the time-dependent Schödinger equation, we then show how the harmonic response to linearly polarized lasers strongly depends on the ring physical parameters. The results illustrate how the additional degrees of freedom introduced by these parameters provide important handles to control the emitted spectrum that in some cases extends into the XUV region.

AB - In this work we study harmonic emission from structured quantum rings (SQRs). In SQRs, electrons trapped in two-dimensional structures are further confined by an external potential composed of N scattering centers arranged on a circle. We build a suitable one-dimensional model Hamiltonian describing this class of systems and analytically solve the associated Schödinger equation. We find that the solution can be expressed in terms of Mathieu functions and focus on the specific case of N = 6. By exactly solving the time-dependent Schödinger equation, we then show how the harmonic response to linearly polarized lasers strongly depends on the ring physical parameters. The results illustrate how the additional degrees of freedom introduced by these parameters provide important handles to control the emitted spectrum that in some cases extends into the XUV region.

KW - Condensed Matter Physics; Atomic and Molecular Physics

KW - and Optics

KW - Condensed Matter Physics; Atomic and Molecular Physics

KW - and Optics

UR - http://hdl.handle.net/10447/147845

UR - http://iopscience.iop.org/0953-4075/48/11/115401/pdf/0953-4075_48_11_115401.pdf

M3 - Article

VL - 48

SP - 115401-

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

SN - 0953-4075

ER -