A robust all-non-optical method for the characterization of single-shot few-cycle laser pulses

TL;DR

This paper introduces a non-optical technique that accurately characterizes single-shot few-cycle laser pulses by analyzing photoelectron asymmetries, enabling direct measurement of pulse parameters and intensity.

Contribution

It presents a novel all-non-optical method using photoelectron asymmetry analysis to determine laser pulse parameters on a single-shot basis.

Findings

Successfully retrieves carrier-envelope phase, pulse duration, and peak intensity.

Provides direct measurement of laser intensity in the interaction region.

Applicable to individual laser shots with high accuracy.

Abstract

An all non-optical method for accurately determining the pulse parameters of individual few-cycle laser shots is presented. By analyzing the "left" and "right" asymmetry of high-energy photoelectrons along the polarization axis using the recently developed quantitative rescattering theory, we show that the carrier-envelope phase, the pulse duration and the peak intensity of each single-shot pulse can be readily retrieved. Unlike optical measurements, this method provides the laser intensity in the interaction region directly.