Picture of boy being examining by doctor at a tuberculosis sanatorium

Understanding our future through Open Access research about our past...

Strathprints makes available scholarly Open Access content by researchers in the Centre for the Social History of Health & Healthcare (CSHHH), based within the School of Humanities, and considered Scotland's leading centre for the history of health and medicine.

Research at CSHHH explores the modern world since 1800 in locations as diverse as the UK, Asia, Africa, North America, and Europe. Areas of specialism include contraception and sexuality; family health and medical services; occupational health and medicine; disability; the history of psychiatry; conflict and warfare; and, drugs, pharmaceuticals and intoxicants.

Explore the Open Access research of the Centre for the Social History of Health and Healthcare. Or explore all of Strathclyde's Open Access research...

Image: Heart of England NHS Foundation Trust. Wellcome Collection - CC-BY.

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

Vieira, J and Trines, R. M. G. M. and Alves, E. P. and Fonseca, R.A. and Mendonça, J. T. and Bingham, R. and Norreys, P. and Silva, L.O. (2016) Amplification and generation of ultra-intense twisted laser pulses via stimulated Raman scattering. Nature Communications, 7. ISSN 2041-1723

[img]
Preview
Text (Vieira-etal-NC2016-amplification-and-generation-of-ultra-intense-twisted-laser)
Vieira_etal_NC2016_amplification_and_generation_of_ultra_intense_twisted_laser.pdf
Final Published Version
License: Creative Commons Attribution 4.0 logo

Download (2MB) | Preview

Abstract

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.