Measurement of the absolute timing of attosecond XUV bursts with respect to the driving field

Niranjan Shivaram, Henry Timmers, Xiao Min Tong, Arvinder Singh Sandhu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We demonstrate that a simple two-color ionization measurement can be used to extract the time of birth of attosecond extreme ultraviolet pulses. A high-order-harmonic attosecond pulse train generated in xenon gas is used to excite a laser-dressed helium atom, which we model using the Floquet formalism. The interference between ionization paths from different Fourier components of the Floquet states results in the oscillation of ion yield with time delay. Using two IR pulses to create a reference intensity modulation, we obtain the phase of ion-yield oscillations, which provides the absolute timing of attosecond bursts with respect to the driving IR field.

Original languageEnglish (US)
Article number051802
JournalPhysical Review A
Volume85
Issue number5
DOIs
StatePublished - May 14 2012

Fingerprint

bursts
time measurement
pulses
ionization
oscillations
helium atoms
xenon
ions
time lag
formalism
interference
harmonics
color
modulation
gases
lasers

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Measurement of the absolute timing of attosecond XUV bursts with respect to the driving field. / Shivaram, Niranjan; Timmers, Henry; Tong, Xiao Min; Sandhu, Arvinder Singh.

In: Physical Review A, Vol. 85, No. 5, 051802, 14.05.2012.

Research output: Contribution to journalArticle

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