Giant enhancement of the Faraday effect in a magnetoplasmonic nanocomposite

Tomilin, S. V.; Karavaynikov, A. V.; Lyashko, S. D.; Milyukova, E. T.; Tomilina, O. A.; Yanovsky, A. S.; Belotelov, V. I.; Berzhansky, V. N.

doi:10.1364/ome.446392

Cited by 9 publications

(7 citation statements)

References 33 publications

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“…Thus, the interaction depth (near field penetration) of the resonating plasmonic subsystem with the magneto-optical BiIG matrix is realized at a distance not more than h NF = 2.5•r NP [32], where r NP is the radius of gold nanoparticles. mode) in self-assembled gold nanoparticles [13,[28][29][30][31]. In our case, the plasmonic system has a resonant wavelength of λLPR = 660 nm.…”

Section: Optics and Plasmonics Of Magnetoplasmonic Nanocompositementioning

confidence: 76%

“…So, we can conclude that a new "high-frequency" mode emerges as a result of the dipole interaction between neighboring plasmon. The physical essence of this mode is the coupled dipoledipole oscillations (d-d-mode), which was demonstrated earlier in [24,31].…”

Section: Optics and Plasmonics Of Magnetoplasmonic Nanocompositementioning

confidence: 77%

“…As can be seen, the transmittance spectrum of Au (NP) nanoparticles exhibits a spectral trough. This trough is associated with the optical absorption for excitation of the LPR dipole mode (d-mode) in self-assembled gold nanoparticles [13,[28][29][30][31]. In our case, the plasmonic system has a resonant wavelength of λ LPR = 660 nm.…”

Section: Optics and Plasmonics Of Magnetoplasmonic Nanocompositementioning

confidence: 78%

“…As can be seen, both LPR modes have a significant "red" shift with an increase in garnet thickness [30,31]. In this case, the efficiency of the "high-frequency" mode excitation is increased, and the "low-frequency" dipole mode excitation is decreased.…”

Section: Optics and Plasmonics Of Magnetoplasmonic Nanocompositementioning

confidence: 91%

“…Also, a new local trough appears in the spectra. This trough is due to the resonant excitation of an additional "high-frequency" LPR mode [31].…”

Section: Optics and Plasmonics Of Magnetoplasmonic Nanocompositementioning

confidence: 98%

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Asymmetric Magneto-Optical Rotation in Magnetoplasmonic Nanocomposites

et al. 2023

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The results of the asymmetric magneto-optical rotation in the magnetoplasmonic nanocomposite study are presented. The asymmetry is observed in spectra of magneto-optical rotation when a magneto-optical medium with a plasmonic subsystem is magnetized along or against the radiation wave vector. The asymmetry is observed as vertical displacement of a magneto-optical hysteresis loop too. Such asymmetry is detected in magnetoplasmonic nanocomposite, which consists of a magneto-optical layer of Bi substituted iron-garnet intercalated with a plasmonic subsystem of gold self-assembled nanoparticles. It is shown that the physical reason for the asymmetric magneto-optical rotation is the manifestation of the Cotton–Mouton birefringence effect when the normal magnetization of the sample to a radiation wave vector appears due to the magnetic component of the electromagnetic field of resonating nanoparticles. This effect is additive to the basic magneto-optical Faraday Effect.

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Section: Optics and Plasmonics Of Magnetoplasmonic Nanocompositementioning

confidence: 76%

Section: Optics and Plasmonics Of Magnetoplasmonic Nanocompositementioning

confidence: 77%

Section: Optics and Plasmonics Of Magnetoplasmonic Nanocompositementioning

confidence: 78%

Section: Optics and Plasmonics Of Magnetoplasmonic Nanocompositementioning

confidence: 91%

“…Also, a new local trough appears in the spectra. This trough is due to the resonant excitation of an additional "high-frequency" LPR mode [31].…”

Section: Optics and Plasmonics Of Magnetoplasmonic Nanocompositementioning

confidence: 98%

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Asymmetric Magneto-Optical Rotation in Magnetoplasmonic Nanocomposites

et al. 2023

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Large Mid‐Infrared Magneto‐Optic Response from Doped Cadmium Oxide at Its Epsilon‐Near‐Zero Frequency

Schrecengost,

Cleri,

Tolchin

et al. 2024

Advanced Optical Materials

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The epsilon‐near‐zero (ENZ) frequency regime of transparent conducting oxide materials is known to yield large enhancements in their optical nonlinearity and electro‐optic response. Here, Faraday rotation is investigated in Gd and In‐doped CdO films and it is found that the Verdet constant peaks at values >3 105 deg T−1 m−1 near the ENZ frequency, which is tunable in the wavelength range 2 < λ< 10 µm by varying the doping concentration. These results are among the highest reported to date in the mid‐infrared spectral range and are in good agreement with the Drude model, which confirms that the magneto‐optic response of doped CdO derives from its free carriers. The combination of a tunable Verdet constant, low optical loss compared to other plasmonic materials, and the ability to deposit CdO on Si with no loss in performance make this material a promising platform for integrated magneto‐optic and magnetoplasmonic devices that operate across the mid‐infrared.

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