High-Q surface modes in photonic crystal/iron garnet film heterostructures for sensor applications

Document Type

Journal Article

Publication Title

JETP Letters

Publisher

Springer

School

Electron Science Research Institute

RAS ID

22987

Comments

Ignatyeva, D. O., Kapralov, P. O., Knyazev, G. A., Sekatskii, S. K., Dietler, G., Nur-E-Alam, M., . . . Belotelov, V. I. (2016). High-Q surface modes in photonic crystal/iron garnet film heterostructures for sensor applications. JETP Letters, 104(10), 679-684.

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Abstract

A novel type of a plasmonic sensor based on a magnetophotonic plasmonic heterostructure with an ultrahigh-Q resonance is considered. A magnetoplasmonic resonance with an angular width of 0.06°, which corresponds to a Q factor of 700 and is a record value for magnetoplasmonic sensors, is experimentally demonstrated. It is shown that, owing to the excitation of long-propagation-range plasmons, the transverse magneto-optical Kerr effect is considerably enhanced and, thus, the sensitivity of the magnetoplasmonic sensor to variations in the refractive index increases to 18 RIU–1, where RIU is the refractive index unit. Numerical calculations indicate that the parameters of the magnetoplasmonic structure can be further optimized to attain sensitivities up to 5 × 103 RIU–1.

Additional Information

Original Russian Text © D.O. Ignatyeva, P.O. Kapralov, G.A. Knyazev, S.K. Sekatskii, G. Dietler, M. Nur-E-Alam, M. Vasiliev, K. Alameh, V.I. Belotelov, 2016, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2016, Vol. 104, No. 10, pp. 689–694.

DOI

10.1134/S0021364016220094

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