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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. 31, Iss. 8 — Aug. 1, 2014
  • pp: 1836–1844

Optics InfoBase > JOSA B > Page 1836

Spectral dependence of the magnetic modulation of surface plasmon polaritons in permalloy/noble metal films

V. G. Kravets, P. Yu. Kurioz, and L. V. Poperenko  »View Author Affiliations


JOSA B, Vol. 31, Issue 8, pp. 1836-1844 (2014)
http://dx.doi.org/10.1364/JOSAB.31.001836


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Abstract

We present our investigations on the enhancement of magneto-optical (MO) effects in multilayer NiFe/Ag(Au,Cu) thin films. A strong enhancement of the polar MO activity is observed when surface plasmon polaritons (SPPs) are excited in the Kretschmann configuration. We show that the best optimization depends not only on the MO coefficients of ferromagnetic metal but also on the surface plasmon resonances of the chosen noble metal. We have experimentally determined both the real and the imaginary parts of the magnetic-field-induced modification of the SPP wave vector for NiFe/Ag(Au,Cu) magnetoplasmonic systems. We have analyzed the spectral dependencies of the polar Kerr effect in NiFe/Ag(Au,Cu) bilayer films and the modulation of the SPP wave vector, and we conclude that it is dominated by the evolution of the SPP properties with photon energy and not the MO parameter.

© 2014 Optical Society of America

OCIS Codes
(240.0240) Optics at surfaces : Optics at surfaces
(240.0310) Optics at surfaces : Thin films
(240.6680) Optics at surfaces : Surface plasmons
(240.2130) Optics at surfaces : Ellipsometry and polarimetry

ToC Category:
Optics at Surfaces

History
Original Manuscript: April 24, 2014
Revised Manuscript: June 11, 2014
Manuscript Accepted: June 11, 2014
Published: July 11, 2014

Citation
V. G. Kravets, P. Yu. Kurioz, and L. V. Poperenko, "Spectral dependence of the magnetic modulation of surface plasmon polaritons in permalloy/noble metal films," J. Opt. Soc. Am. B 31, 1836-1844 (2014)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-31-8-1836

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