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Phys Rev Lett. 2015 Jul 10;115(2):023902. doi: 10.1103/PhysRevLett.115.023902. Epub 2015 Jul 08.

Femtosecond Enhancement Cavities in the Nonlinear Regime.

Physical review letters

S Holzberger, N Lilienfein, H Carstens, T Saule, M Högner, F Lücking, M Trubetskov, V Pervak, T Eidam, J Limpert, A Tünnermann, E Fill, F Krausz, I Pupeza

Affiliations

  1. Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany.
  2. Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching, Germany.
  3. Friedrich-Schiller-Universität Jena, Institut für Angewandte Physik, Albert-Einstein-Straße 15, 07745 Jena, Germany.

PMID: 26207470 DOI: 10.1103/PhysRevLett.115.023902

Abstract

We combine high-finesse optical resonators and spatial-spectral interferometry to a highly phase-sensitive investigation technique for nonlinear light-matter interactions. We experimentally validate an ab initio model for the nonlinear response of a resonator housing a gas target, permitting the global optimization of intracavity conversion processes like high-order harmonic generation. We predict the feasibility of driving intracavity high-order harmonic generation far beyond intensity limitations observed in state-of-the-art systems by exploiting the intracavity nonlinearity to compress the pulses in time.

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