Site-Selective Field Emission Source by Femtosecond Laser Pulses and Its Emission Mechanism

TL;DR

This paper reviews recent experimental and theoretical studies on asymmetric field emission induced by femtosecond laser pulses, exploring emission mechanisms across various DC fields and laser powers.

Contribution

It provides a comprehensive review of emission mechanisms under different conditions and discusses the applicability of simulations for low laser power.

Findings

Photo-assisted field emission dominates at higher DC fields.

Simulations are effective only for lower laser powers.

Emission mechanisms vary with laser and field parameters.

Abstract

Recent experimental and theoretical investigations on asymmetric field emission induced by weak femtosecond laser pulses and also its emission mechanisms are briefly reviewed. The emission mechanisms are discussed further for a wider range of DC fields and laser power. It appears that firstly photo-assisted field emission from lower-excitation order grows in the higher DC fields and secondly our simulations can be applied only for lower laser power.