Femtosecond and attosecond spectroscopy in the xuv regime

Arvinder Singh Sandhu, Xiao Min Tong

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Attosecond-duration, fully coherent, extreme-ultraviolet (XUV) photon bursts obtained through laser high-harmonic generation have opened up new possibilities in the study of atomic and molecular dynamics. We discuss experiments elucidating some of the interesting energy redistribution mechanisms that follow the interaction of a high-energy photon with a molecule. The crucial role of synchronized, strong-field, near-IR laser pulses in XUV pump-probe spectroscopy is highlighted. We demonstrate that near-IR pulses can in fact be used to modify the atomic structure and control the electronic dynamics on attosecond timescales. Our measurements show that the Gouy phase slip in the interaction region plays a significant role in these attosecond experiments. We perform precision measurement of interferences between strong field-induced Floquet channels to extract the intensity and phase dependence of photoionization dynamics. Applications of emerging table-top ultrafast XUV sources in the study of core electron dynamics are also discussed.

Original languageEnglish (US)
Article number6145139
Pages (from-to)351-362
Number of pages12
JournalIEEE Journal on Selected Topics in Quantum Electronics
Volume18
Issue number1
DOIs
StatePublished - 2012

Fingerprint

Spectroscopy
Photons
spectroscopy
Photoionization
Harmonic generation
Molecular dynamics
Laser pulses
photons
pulses
Experiments
atomic structure
Pumps
infrared lasers
photoionization
emerging
bursts
harmonic generations
near fields
Molecules
slip

Keywords

  • Atomic physics
  • attosecond
  • extreme-ultraviolet (XUV) spectroscopy.
  • femtosecond
  • high harmonics

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

Femtosecond and attosecond spectroscopy in the xuv regime. / Sandhu, Arvinder Singh; Tong, Xiao Min.

In: IEEE Journal on Selected Topics in Quantum Electronics, Vol. 18, No. 1, 6145139, 2012, p. 351-362.

Research output: Contribution to journalArticle

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