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Observation of an x-ray vortex.

Andrew G Peele, Philip J McMahon, David Paterson

|November 23, 2007

Summary

Researchers experimentally observed an optical vortex, a type of phase singularity, in a 9-keV x-ray photon field. This demonstrates the creation and detection of these complex wave structures using x-ray optics and interferometry.

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Area of Science:

Physics
Optics
Wave Phenomena

Background:

Phase singularities are fundamental to wave topology and occur in various wave forms.
Optical vortices are a specific type of phase singularity characterized by a spiral phase ramp.

Purpose of the Study:

To experimentally observe an optical vortex in a 9-keV x-ray photon field.
To demonstrate the creation and detection of x-ray optical vortices.

Main Methods:

Utilized a specialized x-ray optical structure to impart a spiral phase distribution to the x-ray wave field.
Employed a division-of-wave-front interferometer, using diffraction about a wire, for vortex observation.

Main Results:

Successfully created an optical vortex using 9-keV x-ray photons.
Experimentally confirmed the presence of the optical vortex through interferometric observation.

Conclusions:

This study reports the first experimental observation of an optical vortex in x-ray photons.
The findings validate the creation and detection of complex wave structures in the x-ray regime.