Towards Laser Intensity Calibration Using High-Field Ionization

M. F. Ciappina*, S. V. Bulanov, T. Ditmire, G. Korn, S. Weber

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

2 Scopus citations

Abstract

We present an approach for direct measurement of ultrahigh laser intensities in the range W/cm. The method is based on the use of multiple sequential tunneling ionization of heavy atoms with adequately high ionization potentials. We show that, due to the highly nonlinear dependence of tunneling ionization rates on the electromagnetic field strength, an off-set in the charge distribution of ions appears to be clearly sensitive to the peak value of intensity in the laser focus. Based on the tunnel-ionization mechanism, a simple analytic theory helps in estimating the maximal charge state produced at a given laser intensity. Our theory also allows for calculating qualitatively a distribution in charge states generated in different zones of the laser focus. These qualitative predictions are in excellent agreement with numerical simulations of the tunneling cascades, developed in the interaction of a short tightly focused laser pulse with low-density noble gas targets. The method could be particularly useful and of instrumental demand in view of the expected commissioning of several new laser facilities, capable of delivering ultra-powerful light pulses in the above mentioned domain of intensities.

Original languageEnglish
Title of host publicationTopics in Applied Physics
PublisherSpringer
Pages149-176
Number of pages28
DOIs
StatePublished - 2020

Publication series

NameTopics in Applied Physics
Volume136
ISSN (Print)0303-4216
ISSN (Electronic)1437-0859

Fingerprint Dive into the research topics of 'Towards Laser Intensity Calibration Using High-Field Ionization'. Together they form a unique fingerprint.

Cite this