Signature of relativistic effects in atom-laser interactions at ultrahigh intensities

TitleSignature of relativistic effects in atom-laser interactions at ultrahigh intensities
Publication TypeJournal Article
Year of Publication1998
Taieb, R, Veniard, V, Maquet, A
JournalPHYSICAL REVIEW LETTERS
Volume81
Issue14
Pagination2882-2885
Date PublishedOCT 5
ISSN0031-9007
Keywordspaper
Abstract

With the help of a theoretical analysis supported by numerical simulations, we show that one can observe unambiguous relativistic effects in atom-laser interactions in the regime of ultrahigh intensities. These effects, which can be observed in the high frequency stabilization regime, differ from ordinary high-Z relativistic corrections and also from those resulting from standard relativistic dynamics of free electrons in a plasma. Their signature is the occurrence of notable modifications in above-threshold-ionization spectra resulting from a two-color scheme involving simultaneously a high frequency and a low frequency field.

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