Extraordinary enhancement of the transverse magneto-optical Kerr effect with high-refractive-index nanostructures

2021 ◽  
Author(s):  
William O. F. Carvalho ◽  
Edwin Moncada-Villa ◽  
Osvaldo N. Oliveira ◽  
Jorge Ricardo Mejía-Salazar
Keyword(s):  
Refractive Index ◽  
Kerr Effect ◽  
High Refractive Index ◽  
Optical Kerr Effect ◽  
Magneto Optical Kerr Effect

scholarly journals High-Refractive-Index Materials for Giant Enhancement of the Transverse Magneto-Optical Kerr Effect

Sensors ◽  
2020 ◽  
Vol 20 (4) ◽  
pp. 952
Author(s):  
Edwin Moncada-Villa ◽  
J. Ricardo Mejía-Salazar
Keyword(s):  
Refractive Index ◽  
Data Storage ◽  
Kerr Effect ◽  
High Refractive Index ◽  
Dielectric Substrate ◽  
Optical Kerr Effect ◽  
Plasmonic Structures ◽  
Optical Effects ◽  
Magneto Optical Kerr Effect ◽  
High Level

The ability of plasmonic structures to confine and enhance light at nanometer length scales has been traditionally exploited to boost the magneto-optical effects in magneto-plasmonic structures. These platforms allows for light control via externally applied magnetic fields, which is of prime importance for sensing, data storage, optical-isolation, and telecommunications applications. However, applications are hindered by the high-level of ohmic losses associated to metallic and ferromagnetic components. Here, we use a lossless all-dielectric platform for giant enhancement of the magneto-optical effects. Our structure consists of a high-refractive index dielectric film on top of a magnetic dielectric substrate. We numerically demonstrate an extraordinarily enhanced transverse magneto-optical Kerr effect due to the Fabry–Perot resonances supported by the high-refractive index slab. Potential applications for sensing and biosensing are also illustrated in this work.

scholarly journals Methods of Calculation of the Magneto-Optical Characteristics of Ferromagnetic Materials

2020 ◽  
Vol 65 (4) ◽  
pp. 310
Author(s):  
V. Stashchuk ◽  
V. Stukalenko ◽  
S. Rozouvan ◽  
V. Lysiuk
Keyword(s):  
Experimental Data ◽  
Refractive Index ◽  
Kerr Effect ◽  
Theoretical Models ◽  
Optical Kerr Effect ◽  
Wide Spectral Range ◽  
Free Electrons ◽  
Methods Of Calculation ◽  
Magneto Optical Kerr Effect ◽  
Kerr Angle

We have calculated the optical and magneto-optical properties of ferromagnetics in a wide spectral range hv = 1.24–5.15 eV, by applying theoretical models which were reported earlier in the literature. This allowed us to find a connection between the conductivity and the measured values of the complex Kerr angle Θ in order to establish the most proper technique for processing the experimental data. The behavior of the dispersion curves of diagonal and non-diagonal components of the tensor of optical conductivity depends on the choice of signs of the imaginary parts of a complex Kerr angle and a refractive index, which should be taken into account in the data analysis. The differences between dispersion dependences are insignificant in the region of energies higher than 4.5 eV. In this paper, the classical theory of free electrons in metals has been applied to give more details about the magneto-optical Kerr effect in ferromagnetic samples.

Photo-Induced Magneto-Optical Kerr Effect in Europium Sulfide EuS

2020 ◽  
Vol 62 (9) ◽  
pp. 1619-1623
Author(s):  
P. A. Usachev ◽  
V. N. Katz ◽  
V. V. Pavlov
Keyword(s):  
Kerr Effect ◽  
Optical Kerr Effect ◽  
Europium Sulfide ◽  
Magneto Optical Kerr Effect

scholarly journals Investigation of microstructural attributes of steel surfaces through magneto-optical Kerr effect

2021 ◽  
Vol 11 ◽  
pp. 1245-1259
Author(s):  
M. Jovičević-Klug ◽  
P. Jovičević-Klug ◽  
J. McCord ◽  
B. Podgornik
Keyword(s):  
Kerr Effect ◽  
Optical Kerr Effect ◽  
Steel Surfaces ◽  
Magneto Optical Kerr Effect
Sign in / Sign up

Export Citation Format

Share Document