q-plate for millimeter-wave orbital angular momentum manipulation

Maccalli, Stefania, Pisano, Giampaolo ORCID: https://orcid.org/0000-0003-4302-5681, Colafrancesco, Sergio, Maffei, Bruno, Richard Ng, Ming Wah and Gray, Malcolm 2013. q-plate for millimeter-wave orbital angular momentum manipulation. Applied Optics 52 (4) , pp. 635-639. 10.1364/AO.52.000635

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Abstract

q-plates are quasi-optical devices specifically designed to generate and detect the orbital angular momentum states of the light. It is possible to produce q-plates working at millimeter wavelengths by using a well-known and cheap manufacturing technique. The technique consists of creating inhomogeneous, artificial birefringent materials by machining grooves with specific geometries into normal dielectric materials. In this work, a q-plate working around 100 GHz has been designed, manufactured, and tested using a vector network analyzer. The experimental data validate the modeled intensity and phase for the transformation of an incident Gaussian beam.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Publisher:	The Optical Society
ISSN:	00036935
Last Modified:	27 Oct 2022 08:28
URI:	https://orca.cardiff.ac.uk/id/eprint/62427

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