Fiber-coupled high-speed asynchronous optical sampling with sub-50 fs time resolution

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2015
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We present a fiber-coupled pump-probe system with a sub-50 fs time resolution and a nanosecond time window, based on high-speed asynchronous optical sampling. By use of a transmission grism pulse compressor, we achieve pump pulses with a pulse duration of 42 fs, an average power of 300 mW and a peak power exceeding 5 kW at a pulse repetition rate of 1 GHz after 6 m of optical fiber. With this system we demonstrate thickness mapping of soft X-ray mirrors at a sub-nm thickness resolution on a cm2 scan area. In addition, terahertz field generation with resolved spectral components of up to 3.5 THz at a GHz frequency resolution is demonstrated.

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530 Physik
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ultrafast spectroscopy, dispersion compensation, ultrafast processes in fibers
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ISO 690KRAUSS, Nico, Almut NAST, Dirk C. HEINECKE, Christoph KÖLBL, Helena G. BARROS, Thomas DEKORSY, 2015. Fiber-coupled high-speed asynchronous optical sampling with sub-50 fs time resolution. In: Optics Express. 2015, 23(3), pp. 2145-2156. eISSN 1094-4087. Available under: doi: 10.1364/OE.23.002145
BibTex
@article{Krau2015Fiber-30750,
  year={2015},
  doi={10.1364/OE.23.002145},
  title={Fiber-coupled high-speed asynchronous optical sampling with sub-50 fs time resolution},
  number={3},
  volume={23},
  journal={Optics Express},
  pages={2145--2156},
  author={Krauß, Nico and Nast, Almut and Heinecke, Dirk C. and Kölbl, Christoph and Barros, Helena G. and Dekorsy, Thomas}
}
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