Scientific article
Open access

Modifications of filament spectra by shaped octave-spanning laser pulses

Published inPhysical Review. A, vol. 98, 033804
Publication date2018

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 bar of argon. Plasma generation and self-phase modulation strongly affect the pulse in the spectral and temporal domain. 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 one of the first examples of the application of complex, parametrically shaped white light pulses.

  • arxiv : physics.optics
  • Swiss National Science Foundation - NCCR MUST (200021-117810)
  • European Commission - Laser Filamentation for Probing and Controlling Atmospheric Processes [291201]
Citation (ISO format)
PATAS, Alexander et al. Modifications of filament spectra by shaped octave-spanning laser pulses. In: Physical Review. A, 2018, vol. 98, p. 033804. doi: 10.1103/PhysRevA.98.033804
Main files (1)
Article (Accepted version)
ISSN of the journal1050-2947

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