Long-range quasi-non-diffracting Gauss-Bessel beams in a few-cycle laser field

  • Stoyanov L
  • Zhang Y
  • Dreischuh A
  • et al.
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Abstract

Many applications ranging from nonlinear optics to material processing would benefit from pulsed ultrashort (quasi-)non-diffracting Gauss-Bessel beams (GBBs). Here we demonstrate a straightforward yet efficient method for generating such zeroth- and first-order GBBs using a single reflective spatial light modulator. Even in the sub-8-fs range there are no noticeable consequences for the measured pulse duration. The only effect is a weak "coloring" of the outer-lying satellite rings of the beams due to the spectrum spanning over more than 300 nm. The obtained beams have diffraction half-angles below 40 μ rad and reach propagation distances in excess of 1.5 m.

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Stoyanov, L., Zhang, Y., Dreischuh, A., & Paulus, G. G. (2021). Long-range quasi-non-diffracting Gauss-Bessel beams in a few-cycle laser field. Optics Express, 29(7), 10997. https://doi.org/10.1364/oe.419486

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