4.2 Article

Introduction to macroscopic power scaling principles for high-order harmonic generation

Publisher

IOP PUBLISHING LTD
DOI: 10.1088/1361-6455/50/1/013001

Keywords

high-order harmonic generation; phase matching; attosecond science; scale-invariance; nonlinear optics

Funding

  1. Swedish Research Council
  2. European Research Council (PALP)
  3. Knut and Alice Wallenberg Foundation

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This tutorial presents an introduction to power scaling concepts for high-order harmonic generation (HHG) and attosecond pulse production. We present an overview of state-of-the-art HHG-based extreme ultraviolet (XUV) sources, followed by a brief introduction to basic principles underlying HHG and a detailed discussion of macroscopic effects and scaling principles. Particular emphasis is put on a general scaling model that allows the invariant scaling of the HHG process both, to mu J-level driving laser pulses and thus to multi-MHz repetition rates as well as to 100 mJ-or even Joule-level laser pulses, allowing new intensity regimes with attosecond XUV pulses.

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