Title :
Millimeter-wave beams with phase singularities
Author :
Brand, G. Fergus
Author_Institution :
Sch. of Phys., Sydney Univ., NSW, Australia
fDate :
7/1/1998 12:00:00 AM
Abstract :
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
Keywords :
diffraction gratings; electromagnetic wave diffraction; millimetre wave propagation; blazed gratings; configured plane gratings; efficiency; hollow profiles; millimeter-wave radiation beams; phase singularities; Australia Council; Diffraction gratings; Fasteners; Millimeter wave devices; Millimeter wave propagation; Optical diffraction; Optical polarization; Optical vortices; Physics; Polynomials;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
