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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/6382

Title: Shape invariant higher-order Bessel-like beams carrying orbital angular momentum
Authors: Ismail, Y
Khilo, N
Belyi, V
Forbes, A
Keywords: Non-diffracting
Bessel beams
Spatial light modulator
Laguerre–Gaussian beams
Bessel-like beams
Orbital angular momentum
Issue Date: Sep-2012
Publisher: European Optical Society
Citation: Ismail, Y, Khilo, N, Belyi, V and Forbes, A. 2012. Shape invariant higher-order Bessel-like beams carrying orbital angular momentum. Journal of Optics, Vol. 14, 12pp, doi:10.1088/2040-8978/14/8/085703
Series/Report no.: Workflow;9712
Abstract: We present a method for generating higher-order Bessel beams with z-dependent cone angles. Such fields, if engineered correctly, are shape invariant during propagation and thus do not suffer from a transition from a Bessel-shaped intensity profile in the near field to an annular ring in the far field. We demonstrate the production of such fields in the laboratory with an optical system comprising a combination of two axicons and a lens, allowing for control of the cone angle of the resulting field. While the resulting shape invariant fields are not perfectly non-diffracting, they do maintain many of the same properties as Bessel beams, including self-reconstruction.
Description: Copyright: 2012 European Optical Society. This is an ABSTRACT ONLY. The definitive version is published in Journal of Optics, Vol. 14, doi:10.1088/2040-8978/14/8/085703
URI: http://iopscience.iop.org/2040-8986/14/8/085703/
ISSN: 2040-8978
Appears in Collections:Laser physics and technology
General science, engineering & technology

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