A refractive index sensor based on magneto-optical surface plasmon resonance

Enhancement of the polar magneto-optical Kerr effect with plasma hybrid microstructure

“…At this time, the dielectric constant of the medium will change relative to the left-handed circular polarized light nþ and the right-handed circularly polarized light n−, which causes the polarization plane of the outgoing light to deflect, so that the PMOKE in the microstructure is generated. 27 A study 28 discusses when a Gaussian beam is incident on silicene grown on a dielectric substrate in the presence of a static electromagnetic field and demonstrates that large MOKE can be achieved by tuning the electric field, the magnetic field, and the chemical potential. The corresponding electric field components E x and E y will be superposed to obtain the polarization state of the outgoing light, which can be defined as 29 E Q -T A R G E T ; t e m p : i n t r a l i n k -; e 0 0 1 ; 1 1 4 ; 5 6 7…”

“…When there is an applied magnetic field, a Lorentz force is applied to each electron, which produces the difference between the left-handed and right-handed electron orbital radii. At this time, the dielectric constant of the medium will change relative to the left-handed circular polarized light n+ and the right-handed circularly polarized light n−, which causes the polarization plane of the outgoing light to deflect, so that the PMOKE in the microstructure is generated 27 . A study 28 discusses when a Gaussian beam is incident on silicene grown on a dielectric substrate in the presence of a static electromagnetic field and demonstrates that large MOKE can be achieved by tuning the electric field, the magnetic field, and the chemical potential.…”

Ferromagnetic Subwavelength Periodic Nanogroove Structure with High Magneto-Optical Kerr Effect for Sensing Applications

“…The magneto-optical Kerr effect (MOKE) can display diverse responses concerning the direction of the magnetization, incident plane, and sample surface, and it mainly occurs in three different forms: longitudinal MOKE, polar MOKE with respect to the change in light polarization, and transverse MOKE (TMOKE), which evaluates the intensity change of the light in the reflected or transmitted directions. − Magneto-optical devices based on TMOKE have attracted considerable attention and have driven the advancement in the sensing of biomolecules, gases, , water, − butanol, and chloroform . The primary requirement for these applications is that the device must exhibit a detectable TMOKE signal.…”

Transverse magneto-optical behavior of nanoporous ferromagnetic film based on anodic aluminum oxide/aluminum template and its sensing application

“…6 However, these applications are limited for further exploitation due to the extremely lowintensity TMOKE signals. To a certain extent, this limitation can be addressed by the confinement of the electromagnetic energy at the nanoscale, which allows for a significant enhancement of the electromagnetic field owing to the realization of the surface plasmon resonance (SPR) using prism-based metal/ magnetic multilayers [7][8][9] and structures comprising plasmonic gratings and magnetic materials. [10][11][12] However, with the development of microfluidic sensing devices, the high volume of prismatic couplers required for SPR excitation has prevented the multiplexing, miniaturization, high flux, integrability, and portability required for lightweight sensing instruments.…”