Phase control of attosecond pulses in a train

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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.

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • Louisiana State University
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Atom- och molekylfysik och optik

Nyckelord

Originalspråkengelska
Artikelnummer034006
TidskriftJournal of Physics B: Atomic, Molecular and Optical Physics
Volym51
Utgåva nummer3
StatusPublished - 2018 jan 16
PublikationskategoriForskning
Peer review utfördJa