Abstract
We explore the capabilities of planar metamaterials and metasurfaces to control and transform the polarization of electromagnetic radiation, and present a detailed covariant multipole theory of dimer-based metamaterials. We show that various optical properties, such as optical activity, elliptical dichroism or polarization conversion can be achieved in metamaterials made of simple shapes, such as nanorods, just by varying their geometrical arrangement. By virtue of the Babinet principle, the proposed theory is extended to inverted structures (membranes) where rods are replaced by slots. Such free-standing “metasurface membranes” can act as thin-film spectrally sensitive polarization shapers for THz radiation. Proof-of-principle devices (a linear polarizer and a structure with giant optical activity) are fabricated and characterized. Experimental results coincide with those of full-wave numerical simulations, and are in good agreement with analytical predictions.
Original language | English |
---|---|
Title of host publication | 2013 15th International Conference on Transparent Optical Networks (ICTON) |
Number of pages | 4 |
Publisher | IEEE |
Publication date | 2013 |
Pages | We.D5.2 |
ISBN (Print) | 978-1-4799-0683-3 |
DOIs | |
Publication status | Published - 2013 |
Event | 15th International Conference on Transparent Optical Networks (ICTON) - Cartagena, Spain Duration: 23 Jun 2013 → 27 Jun 2013 http://www.ait.upct.es/icton2013/ |
Conference
Conference | 15th International Conference on Transparent Optical Networks (ICTON) |
---|---|
Country/Territory | Spain |
City | Cartagena |
Period | 23/06/2013 → 27/06/2013 |
Internet address |