Nonlinear electron emission under the action of ultrashort laser pulse

TL;DR

This paper models nonlinear electron emission from a metal surface induced by ultrashort femtosecond laser pulses, solving the time-dependent Schrödinger equation to analyze electron energy spectra and their dependence on laser parameters.

Contribution

It introduces a one-dimensional model that accounts for p-polarized light effects and provides a detailed analysis of electron emission spectra under femtosecond laser irradiation.

Findings

Energy spectrum of emitted electrons obtained

Dependence of spectra on laser pulse parameters analyzed

Model agrees with experimental data

Abstract

The process of nonlinear electron emission from a metal surface under the action of femtosecond laser pulse with moderate intensity $\sim10^{11}$~W/cm$^2$ is considered. One-dimensional model is formulated, taking into account the advantage of the $p$-polarized light in the nonlinear emission. The time dependent Schrodinger equation with fixed equilibrium boundary conditions is solved in the half-space using the Laplace transform technique. The energy spectrum of emitted electrons is obtained, and its dependence on the laser pulse parameters in compare with experimental data is discussed.