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Millimeter-wave beams with phase singularities

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1 Author(s)
Brand, G.F. ; Sch. of Phys., Sydney Univ., NSW, Australia

Beams of millimeter-wave radiation carrying phase singularities have been generated using specially configured plane and blazed gratings. The blazed grating converts a plane wave into such a beam with very high efficiency. All of the properties of these beams that have been seen at optical wavelengths, such as the hollow profiles of the beams and the way a beam already carrying a singularity is subsequently diffracted, are shown to appear at millimeter wavelengths

Published in:

Microwave Theory and Techniques, IEEE Transactions on  (Volume:46 ,  Issue: 7 )

Date of Publication:

Jul 1998

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