Amplification and generation of ultra-intense twisted laser pulses via stimulated Raman scattering

J Vieira, R. M. G. M. Trines, E. P. Alves, R.A. Fonseca, J. T. Mendonça, R. Bingham, P. Norreys, L.O. Silva

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100 Citations (Scopus)
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Twisted Laguerre–Gaussian lasers, with orbital angular momentum and characterized by doughnut-shaped intensity profiles, provide a transformative set of tools and research directions in a growing range of fields and applications, from super-resolution microcopy and ultra-fast optical communications to quantum computing and astrophysics. The impact of twisted light is widening as recent numerical calculations provided solutions to long-standing challenges in plasma-based acceleration by allowing for high-gradient positron acceleration.
The production of ultra-high-intensity twisted laser pulses could then also have a broad influence on relativistic laser–matter interactions. Here we show theoretically and with ab initio three-dimensional particle-in-cell simulations that stimulated Raman backscattering can generate and amplify twisted lasers to petawatt intensities in plasmas. This work may open new research directions in nonlinear optics and high–energy-density science, compact plasma-based accelerators and light sources.
Original languageEnglish
Number of pages7
JournalNature Communications
Publication statusPublished - 28 Jan 2016


  • Laguerre–Gaussian lasers
  • twisted light
  • plasma-based acceleration
  • high-gradient positron acceleration
  • Raman backscattering
  • petawatt itensities


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