High-speed asynchronous optical sampling with sub-50fs time resolution

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2010
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Optics Express. 2010, 18(6), pp. 5974-5983. eISSN 1094-4087. Available under: doi: 10.1364/OE.18.005974
Zusammenfassung

We report an ultrafast time-domain spectroscopy system based on high-speed asynchronous optical sampling operating without mechanical scanner. The system uses two 1 GHz femtosecond oscillators that are offsetstabilized using high-bandwidth feedback electronics operating at the tenth repetition rate harmonics. Definition of the offset frequency, i.e. the timedelay scan rate, in the range of a few kilohertz is accomplished using directdigital-synthesis electronics for the first time. The time-resolution of the system over the full available 1 ns time-delay window is determined by the laser pulse duration and is 45 fs. This represents a three-fold improvement compared to previous approaches where timing jitter was the limiting factor. Two showcase experiments are presented to verify the high time-resolution and sensitivity of the system.

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530 Physik
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Ultrafast spectroscopy, Spectroscopy, Spectroscopy, high-resolution, X-ray mirrors, time-resolved
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ISO 690GEBS, Raphael, Gregor KLATT, Christof JANKE, Thomas DEKORSY, Albrecht BARTELS, 2010. High-speed asynchronous optical sampling with sub-50fs time resolution. In: Optics Express. 2010, 18(6), pp. 5974-5983. eISSN 1094-4087. Available under: doi: 10.1364/OE.18.005974
BibTex
@article{Gebs2010Highs-5245,
  year={2010},
  doi={10.1364/OE.18.005974},
  title={High-speed asynchronous optical sampling with sub-50fs time resolution},
  number={6},
  volume={18},
  journal={Optics Express},
  pages={5974--5983},
  author={Gebs, Raphael and Klatt, Gregor and Janke, Christof and Dekorsy, Thomas and Bartels, Albrecht}
}
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