Miniature plasmonic wave plates
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TLDR
The experimental results and the theoretical analysis show that the general procedure used does not influence the optical coherence of the polarization state and allows us to explore completely the surface of the unit Poincaré sphere by changing only the shape of the elliptical grating.Abstract:
Linear birefringence, as implemented in wave plates, is a natural way to control the state of polarization of light. We report on a general method for designing miniature planar wave plates using surface plasmons. The resonant optical device considered here is a single circular aperture surrounded by an elliptical antenna grating. The difference between the short and long axis of each ellipsis introduces a phase shift on the surface plasmons which enables the realization of a quarter wave plate. Furthermore, the experimental results and the theoretical analysis show that the general procedure used does not influence the optical coherence of the polarization state and allows us to explore completely the surface of the unit Poincare sphere by changing only the shape of the elliptical grating.read more
Citations
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Light passing through subwavelength apertures
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Manipulating light polarization with ultrathin plasmonic metasurfaces
Yang Zhao,Andrea Alù +1 more
TL;DR: In this article, the design of ultrathin quarter-wave plates based on plasmonic metasurfaces was analyzed and the frequency and angular response of the plates were analyzed.
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Metasurfaces and their applications
TL;DR: Metasurfaces have been a topic of significant research and are used in various applications due to their unique ability to manipulate electromagnetic waves in microwave and optical frequencies as mentioned in this paper, which has the advantages of light weight, ease of fabrication, and ability to control wave propagation both on the surface and in the surrounding free space.
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Tailoring the dispersion of plasmonic nanorods to realize broadband optical meta-waveplates.
Yang Zhao,Andrea Alù +1 more
TL;DR: Here it is able to theoretically and experimentally demonstrate that broadband, strong polarization conversion and quarter-wave plate functionality may be achieved using a single, ultrathin planar metasurface in the visible regime.
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Femtosecond control of electric currents in metallic ferromagnetic heterostructures
T.J. Huisman,Rostislav Mikhaylovskiy,J. D. Costa,Frank Freimuth,Elvira Paz,João Ventura,Paulo P. Freitas,Stefan Blügel,Yuriy Mokrousov,Th. Rasing,Alexey Kimel +10 more
TL;DR: Using terahertz (10(12) Hz) emission spectroscopy and exploiting the spin-orbit interaction, this work demonstrates the optical generation of electric photocurrents in metallic ferromagnetic heterostructures at the femtosecond timescale.
References
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Book
An Introduction to Classical Electromagnetic Radiation
TL;DR: In this article, the basic theory of classical electromagnetism is presented and a vector analysis of the electromagnetic field of a moving point charge is presented. But the analysis is restricted to the case of thin-wire antennas.