Controlling the orbital angular momentum of high harmonic vortices

Fanqi Kong, Chunmei Zhang, Frédéric Bouchard, Zhengyan Li, Graham G. Brown, Dong Hyuk Ko, T. J. Hammond, Ladan Arissian, Robert W. Boyd, Ebrahim Karimi and P. B. Corkum ()
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Fanqi Kong: University of Ottawa
Chunmei Zhang: University of Ottawa
Frédéric Bouchard: University of Ottawa
Zhengyan Li: University of Ottawa
Graham G. Brown: University of Ottawa
Dong Hyuk Ko: University of Ottawa
T. J. Hammond: University of Ottawa
Ladan Arissian: Joint Attosecond Science Laboratory, University of Ottawa and National Research Council of Canada
Robert W. Boyd: University of Ottawa
Ebrahim Karimi: University of Ottawa
P. B. Corkum: University of Ottawa

Nature Communications, 2017, vol. 8, issue 1, 1-6

Abstract: 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.

Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14970

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DOI: 10.1038/ncomms14970

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