Observation of an x-ray vortex

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/55892

Title: Observation of an x-ray vortex
Author(s): Peele, Andrew G.; McMahon, Philip J.; Paterson, David; Tran, Chanh Q.; Mancuso, Adrian P.; Nugent, Keith A.; Hayes, Jason P.; Harvey, Erol; Lai, Barry; McNulty, Ian
Abstract: Phase singularities are a ubiquitous feature of waves of all forms and represent a fundamental aspect of wave topology. An optical vortex phase singularity occurs when there is a spiral phase ramp about a point phase singularity. We report an experimental observation of an optical vortex in a field consisting of 9-kev x-ray photons. The vortex is created with an x-ray optical structure that imparts a spiral phase distribution to the incident wave field and is observed by use of diffraction about a wire to create a division-of-wave-front interferometer.
Publication type: Journal article
Research centre: Swinburne University of Technology. Industrial Research Institute Swinburne
Source: Optics Letters, Vol. 27, no. 20 (Oct 2002), pp. 1752-1754
Publication year: 2002
FOR Code(s): 0205 Optical Physics
Keyword(s): Coherent light; Diffraction; Excimer lasers; Interferometry; Laser ablation; Light interference; Phase singularities; Photons; Refractive index; Wave effects
Publisher: Optical Society of America
ISSN: 0146-9592
Publisher URL: http://dx.doi.org/10.1364/OL.27.001752
Peer reviewed