Measuring laser carrier-envelope phase effects in the noble gases with an atomic hydrogen calibration standard

TL;DR

This paper reports precise measurements of carrier-envelope phase effects on noble gas ionization using a hydrogen calibration standard, revealing discrepancies with theoretical models.

Contribution

The study introduces a calibration method using atomic hydrogen to improve accuracy in CEP measurements of noble gases, highlighting differences from theoretical predictions.

Findings

Accurate CEP effects measured for noble gases Ar, Kr, Xe.

Hydrogen calibration reduces systematic errors in CEP measurements.

Significant differences observed between experimental data and TDSE simulations for noble gases.

Abstract

We present accurate measurements of carrier-envelope phase effects on ionisation of the noble gases with few-cycle laser pulses. The experimental apparatus is calibrated by using atomic hydrogen data to remove any systematic offsets and thereby obtain accurate CEP data on other generally used noble gases such as Ar, Kr and Xe. Experimental results for H are well supported by exact TDSE theoretical simulations however significant differences are observed in case of noble gases.