Phase control of attosecond pulses in a train

Research output: Contribution to journalArticle

Abstract

Ultrafast processes in matter can be captured and even controlled by using sequences of few-cycle optical pulses, which need to be well characterized, both in amplitude and phase. The same degree of control has not yet been achieved for few-cycle extreme ultraviolet pulses generated by high-order harmonic generation (HHG) in gases, with duration in the attosecond range. Here, we show that by varying the spectral phase and carrier-envelope phase (CEP) of a high-repetition rate laser, using dispersion in glass, we achieve a high degree of control of the relative phase and CEP between consecutive attosecond pulses. The experimental results are supported by a detailed theoretical analysis based upon the semi-classical three-step model for HHG.

Details

Authors
Organisations
External organisations
  • Louisiana State University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Atom and Molecular Physics and Optics

Keywords

  • attosecond pulse, carrier-envelope phase, High-order harmonic generation
Original languageEnglish
Article number034006
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume51
Issue number3
Publication statusPublished - 2018 Jan 16
Publication categoryResearch
Peer-reviewedYes