Attosecond and angstrom science

Hiromichi Niikura*, P. B. Corkum

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

33 Citations (Scopus)


When a strong laser field ionizes atoms (or molecules), the electron wave packet that tunnels from the molecule moves under the influence of the strong field and can re-collide with its parent ion. The maximum re-collision electron kinetic energy depends on the laser wavelength. Timed by the laser field oscillations, the re-colliding electron interferes with the bound state wave function from which it tunneled. The oscillating dipole caused by the quantum interference produces attosecond optical pulses. Interference can characterize both interfering beams-their wavelength, phase and spatial structure. Thus, written on the attosecond pulse is an image of the bound state orbital and the wave function at the re-collision electron. In addition to interfering, the re-collision electron can elastically or inelastically scatter from its parent ion, diffracting from the ion, and exciting or even exploding it. We review attosecond technology while emphasizing the underlying electron-ion re-collision physics.

Original languageEnglish
Pages (from-to)511-548
Number of pages38
JournalAdvances in Atomic, Molecular and Optical Physics
Issue numberC
Publication statusPublished - 2007
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Electronic, Optical and Magnetic Materials


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