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Generation of µW level plateau harmonics at high repetition rate.

Authors
  • Hädrich, S
  • Krebs, M
  • Rothhardt, J
  • Carstens, H
  • Demmler, S
  • Limpert, J
  • Tünnermann, A
Type
Published Article
Journal
Optics Express
Publisher
The Optical Society
Publication Date
Sep 26, 2011
Volume
19
Issue
20
Pages
19374–19383
Identifiers
DOI: 10.1364/OE.19.019374
PMID: 21996878
Source
Medline
License
Unknown

Abstract

The process of high harmonic generation allows for coherent transfer of infrared laser light to the extreme ultraviolet spectral range opening a variety of applications. The low conversion efficiency of this process calls for optimization or higher repetition rate intense ultrashort pulse lasers. Here we present state-of-the-art fiber laser systems for the generation of high harmonics up to 1 MHz repetition rate. We perform measurements of the average power with a calibrated spectrometer and achieved µW harmonics between 45 nm and 61 nm (H23-H17) at a repetition rate of 50 kHz. Additionally, we show the potential for few-cycle pulses at high average power and repetition rate that may enable water-window harmonics at unprecedented repetition rate.

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