Modifications of filament spectra by shaped octave-spanning laser pulses

A. Patas, M. Matthews, S. Hermelin, J. Gateau, J. Kasparian, J. P. Wolf, and A. Lindinger
Phys. Rev. A 98, 033804 – Published 6 September 2018

Abstract

In this paper we examine the spectral changes in a white light laser filament due to different pulse shapes generated by a pulse-shaping setup. We particularly explore how the properties of the filament spectra can be controlled by parametrically tailored white light pulses. The experiments are carried out in a gas cell with up to 9 bars of argon. Plasma generation and self-phase modulation strongly affect the pulse in the spectral and temporal domains. By exploiting these effects we show that the pulse spectrum can be modified in a desired way by either using second-order parametric chirp functions to shift the filament spectrum to higher or lower wavelengths, or by optimizing pulse shapes with a genetic algorithm to generate more complex filament spectra. This paper is an example of the application of complex, parametrically shaped white light pulses.

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  • Received 26 June 2018

DOI:https://doi.org/10.1103/PhysRevA.98.033804

©2018 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalNonlinear DynamicsPlasma Physics

Authors & Affiliations

A. Patas1, M. Matthews2, S. Hermelin2,3, J. Gateau2, J. Kasparian2,4, J. P. Wolf2, and A. Lindinger1,*

  • 1Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
  • 2Group of Applied Physics, Université de Genève, Chemin de Pinchat 22, 1211 Geneva 4, Switzerland
  • 3University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, 69622 Villeurbanne, France
  • 4Institute for Environmental Sciences, Université de Genève, Boulevard Carl Vogt 66, 1205 Geneva 4, Switzerland

  • *Corresponding author: lindin@physik.fu-berlin.de

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Issue

Vol. 98, Iss. 3 — September 2018

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