Controlling the orbital angular momentum of high harmonic vortices

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DOIResolve DOI: https://doi.org/10.1038/ncomms14970
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Name affiliation
  1. National Research Council Canada. Security and Disruptive Technologies
  2. National Research Council Canada. Measurement Science and Standards
FormatText
TypeArticle
Journal titleNature Communications
ISSN2041-1723
Volume8
Article number14970
Pages# of pages: 6
Abstract
Optical vortices, which carry orbital angular momentum (OAM), can be flexibly produced and measured with infrared and visible light. Their application is an important research topic for super-resolution imaging, optical communications and quantum optics. However, only a few methods can produce OAM beams in the extreme ultraviolet (XUV) or X-ray, and controlling the OAM on these beams remains challenging. Here we apply wave mixing to a tabletop high-harmonic source, as proposed in our previous work, and control the topological charge (OAM value) of XUV beams. Our technique enables us to produce first-order OAM beams with the smallest possible central intensity null at XUV wavelengths. This work opens a route for carrier-injected laser machining and lithography, which may reach nanometre or even angstrom resolution. Such a light source is also ideal for space communications, both in the classical and quantum regimes.
Publication date
PublisherNature Publishing Group
LanguageEnglish
Peer reviewedYes
NPARC number23002680
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Record created2017-12-20
Record modified2020-03-16
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