Cavity Enhanced Longitudinal Magneto-Optical Kerr Effect in Magneto-Plasmonic Multilayers Consisting of Ce: YIG Thin Films Incorporating Gold Nanoparticles

• Published in: Journal of superconductivity and novel magnetism Vol. 25; no. 6; pp. 2097 - 2100
• Main Authors: Hamidi, S. M., Tehranchi, M. M.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.08.2012; Springer
• Subjects: Bragg reflectors; Characterization and Evaluation of Materials; Collective excitations (including excitons, polarons, plasmons and other charge-density excitations); Condensed Matter Physics; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Devices; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Garnets; Gold; Kerr effects; Magnetic Materials; Magnetism; Magnetooptical effects; Materials science; Nanoparticles; Nanopowders; Nanoscale materials and structures: fabrication and characterization; Nonlinear optics; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of bulk materials and thin films; Optics; Original Paper; Phase conjugation, optical mixing; photorefractive and kerr effects; Physics; Physics and Astronomy; Plasmons; Position (location); Strongly Correlated Systems; Superconductivity; Surface and interface electron states; Thin films; Au nanoparticles; Bragg reflector mirror; Magneto-plasmonic structures; Magneto-optical Kerr effect; Iron Yttrium Oxides Mixed; Gold; Kerr magneto-optical effect; Bragg reflection; Thin films; Nanoparticles; Screening; Multilayers; Group velocity; Garnets; YIG; Magneto-optical effects; Optical rotation; Surface plasmon resonance; Plasmonics; Localization
• ISSN: 1557-1939; 1557-1947
• DOI: 10.1007/s10948-012-1591-4

Enhanced magneto-optical rotation has been the subject of intense interest for communication technology. In this paper, we report an experimental study on the effect of Bragg reflector mirror and Au nanoparticles on the magneto-optical rotation in a new magneto-optical structure named magneto-plasmonic construction. Our results indicate sufficient longitudinal magneto-optical Kerr effect enhancement in this new structure by the aid of combination of surface plasmon resonance and light localization in magneto-optical garnet layer. The presence of Au nanoparticles leads to screening of the surface plasmon resonance, while Bragg reflector mirror reduces the group velocity in magneto-optical medium as a defect layer and thus we have sufficient enhancement in magneto-optical rotation. These structures can be addressed as a new concept in the development of magneto-plasmonic devices.