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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 8 — Aug. 1, 2013
  • pp: 2053–2058

Magneto-optical Kerr effect in corrugated magnetoplasmonic heterostructures

Y. Demidenko, D. Makarov, O. G. Schmidt, and V. Lozovski  »View Author Affiliations


JOSA B, Vol. 30, Issue 8, pp. 2053-2058 (2013)
http://dx.doi.org/10.1364/JOSAB.30.002053


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Abstract

We performed a detailed theoretical study of the magneto-optical polar Kerr effect in magnetoplasmonic heterostructures consisting of a plasmonic film and a ferromagnetic layer with a corrugated top surface. Explicit analytical expressions allowing us to calculate the modifications of the polar Kerr effect in dependence on the thickness of the plasmonic and ferromagnetic layers as well as on the period and depth of the corrugation were derived. Interestingly, when applied to the test system of an Au/Co bilayer, our calculations show that the presence of corrugations is beneficial, as it allows us to tailor the magneto-optical response in a magnetoplasmonic composite in a resonant manner. This opens the possibility to enhance the strength of the Kerr effect by several orders of magnitude, which is beneficial for the investigation of systems in which magneto-optical responses are rather small, i.e., for characterization of biological or medical systems.

© 2013 Optical Society of America

OCIS Codes
(240.5420) Optics at surfaces : Polaritons
(240.6680) Optics at surfaces : Surface plasmons
(260.2065) Physical optics : Effective medium theory
(310.5448) Thin films : Polarization, other optical properties

ToC Category:
Optics at Surfaces

History
Original Manuscript: June 5, 2013
Revised Manuscript: June 5, 2013
Manuscript Accepted: June 6, 2013
Published: July 5, 2013

Citation
Y. Demidenko, D. Makarov, O. G. Schmidt, and V. Lozovski, "Magneto-optical Kerr effect in corrugated magnetoplasmonic heterostructures," J. Opt. Soc. Am. B 30, 2053-2058 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-8-2053

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