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q-plate for millimeter-wave orbital angular momentum manipulation |
Applied Optics, Vol. 52, Issue 4, pp. 635-639 (2013)
http://dx.doi.org/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.
© 2013 Optical Society of America
OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(050.4865) Diffraction and gratings : Optical vortices
(160.2710) Materials : Inhomogeneous optical media
ToC Category:
Materials
History
Original Manuscript: September 21, 2012
Revised Manuscript: December 7, 2012
Manuscript Accepted: December 18, 2012
Published: January 30, 2013
Citation
Stefania Maccalli, Giampaolo Pisano, Sergio Colafrancesco, Bruno Maffei, Ming Wah Richard Ng, and Malcolm Gray, "q-plate for millimeter-wave orbital angular momentum manipulation," Appl. Opt. 52, 635-639 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-4-635
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