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Frequency-tunable circular polarization beam splitter using a graphene-dielectric sub-wavelength film
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering. Zhejiang University, Hangzhou, China.
2014 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 22, no 16, 19748-19757 p.Article in journal (Refereed) Published
Abstract [en]

Manipulating the circular polarization of light is of great importance in chemistry and biology, as chiral molecules exhibit different physiological properties when exposed to different circularly polarized waves. Here we suggest a graphene/dielectric-stacked structure, which has both the properties of an epsilon-near-zero material and the high Hall conductivity of graphene. The proposed sub-wavelength structure demonstrates efficient manipulation of circular polarization properties of light. In a quite broad frequency range and at a large oblique incidence angle, the present magnetically active structure is transparent for one circularly polarized wave, and opaque for another. Such an effect can be further tuned by changing the magnitude of the applied magnetic field and chemical potential of graphene.

Place, publisher, year, edition, pages
2014. Vol. 22, no 16, 19748-19757 p.
Keyword [en]
Applied magnetic fields, Broad frequency range, Circularly polarized waves, Magnetically actives, Physiological properties, Polarization beam splitters, Polarization properties, Sub-wavelength structures, Graphene, Light polarization, Stereochemistry
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Other Physics Topics
Identifiers
URN: urn:nbn:se:kth:diva-151340ISI: 000340714100085Scopus ID: 2-s2.0-84906081333OAI: oai:DiVA.org:kth-151340DiVA: diva2:748226
Funder
Swedish Research Council, 621-2011-4620
Note

QC 20140918

Available from: 2014-09-18 Created: 2014-09-18 Last updated: 2017-12-05Bibliographically approved

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