Title

Subcycle Ac Stark Shift Of Helium Excited States Probed With Isolated Attosecond Pulses

Abstract

Recent advances in attosecond science have relied upon the nearly instantaneous response of free electrons to an external field. However, it is still not clear whether bound electrons are able to rearrange on sublaser cycle time scales. Here, we probe the optical Stark shifts induced by a few-cycle near infrared laser field in helium bound states using isolated attosecond pulses in a transient absorption scheme and uncover a subcycle laser-induced energy level shift of the laser-dressed 1s3p state. © 2012 American Physical Society.

Publication Date

8-16-2012

Publication Title

Physical Review Letters

Volume

109

Issue

7

Number of Pages

-

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1103/PhysRevLett.109.073601

Socpus ID

84865213590 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84865213590

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