Abstract
In this paper we show how diffraction gratings with defects can generate beams with phase singularities, present an analysis of the phenomenon and discuss some applications. These beams and their effects have been studied at optical and at millimetre wavelengths. We describe a particularly efficient way of generating these beams at millimetre wavelengths employing a blazed grating with a defect.
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© 2001 Kluwer Academic Publishers
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Brand, G.F. (2001). Phase Singularities in Beams. In: IUTAM Symposium on Mechanical and Electromagnetic Waves in Structured Media. Solid Mechanics and Its Applications, vol 91. Springer, Dordrecht. https://doi.org/10.1007/0-306-46955-3_4
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DOI: https://doi.org/10.1007/0-306-46955-3_4
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-7038-3
Online ISBN: 978-0-306-46955-8
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