Spectral broadening of a 500W, 5mJ femtosecond laser

Steffen Hädrich, Peter Simon, Tamas Nagy, Andreas Blumenstein, Robert Klas, Joachim Buldt, Lars Henning Stark, Sven Breitkopf, Péter Jójárt, Zoltán Várallyay, Károly Osvay, Tino Eidam, Jens Limpert

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The ELI-ALPS facility requests lasers with parameters beyond current state-of-the-art [1]. One of the most challenging ones is the high repetition rate laser 2 (HR2), a carrier-envelope-phase stable laser system delivering 5mJ pulses at 100kHz repetition rate and with pulse durations of 6fs, which is currently under development at Active Fiber Systems GmbH. It uses a kW-class ytterbium doped femtosecond fiber-chirped-pulse amplifier system. To achieve the bandwidth required for few-cycle pulses significant nonlinear spectral broadening is necessary. The latter technology has seen rapid scaling both in terms of average power [2] and pulse energy [3,4]. Furthermore, by the introduction of stretched hollow capillaries [5] high-quality long waveguides became available, which is inevitable for upscaling the pulse energy. Despite first promising experiments with ytterbium-based laser systems the average power used in combination with stretched-hollow-core fibers has not exceeded a few Watt yet [6,7].

Original languageEnglish
Title of host publicationThe European Conference on Lasers and Electro-Optics, CLEO_Europe_2019
PublisherOSA - The Optical Society
ISBN (Electronic)9781557528209
Publication statusPublished - Jan 1 2019
EventThe European Conference on Lasers and Electro-Optics, CLEO_Europe_2019 - Munich, Germany
Duration: Jun 23 2019Jun 27 2019

Publication series

NameOptics InfoBase Conference Papers
VolumePart F140-CLEO_Europe 2019

Conference

ConferenceThe European Conference on Lasers and Electro-Optics, CLEO_Europe_2019
CountryGermany
CityMunich
Period6/23/196/27/19

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials

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  • Cite this

    Hädrich, S., Simon, P., Nagy, T., Blumenstein, A., Klas, R., Buldt, J., Stark, L. H., Breitkopf, S., Jójárt, P., Várallyay, Z., Osvay, K., Eidam, T., & Limpert, J. (2019). Spectral broadening of a 500W, 5mJ femtosecond laser. In The European Conference on Lasers and Electro-Optics, CLEO_Europe_2019 [2019-cg_1_3] (Optics InfoBase Conference Papers; Vol. Part F140-CLEO_Europe 2019). OSA - The Optical Society.