Nano-composite magnetic material embedded on TiO<sub>2</sub>pillars to realize magneto-optical resonant guided mode gratings

Varghese, Bobin; Gamet, Émilie; Jamon, Damien; Neveu, Sophie; Berthod, Loïc; Shavdina, Olga; Reynaud, Stéphanie; Verrier, Isabelle; Veillas, Colette

doi:10.1117/12.2209089

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…After coating and soft thermal treatments we get a homogenous optical material which has previously been employed to realize integrated MO converters [21] and 3D magneto-photonic crystals [22]. Its MO FOM, which is linked to the NP introduced, is quite weaker than that of the usual materials used in the different works cited above but the advantage is that this material is quite easy to micro/nano-structurate in the sense that it can for instance impregnate 1D, 2D and 3D micro/nano-structured templates [23,24]. The structure under consideration has been optimized to obtain both TE and TM resonances at the same wavelength.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of magneto-optical effects by a single 1D all dielectric resonant grating

Gamet¹,

Varghese²,

Verrier³

2017

J. Phys. D: Appl. Phys.

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We demonstrate theoretically the enhancement of the four first-order magneto-optical effects using an all-dielectric 1D resonant grating. The modeled structure was designed for the Faraday effect at normal incidence at a wavelength of 1.55 µm for which the calculated improvement is shown to be one hundred times the off-resonance values. At 1° incidence, polar and longitudinal Kerr effects were also improved, showing polarization rotations up to 14°. For the same incidence conditions, transverse magneto optical Kerr effect was also improved, leading to a reflectance difference of 12% for a reflectance intensity of 40%. These results are interesting for the development of magnetic-field sensors capable of detecting of several components of the field.

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Section: Introductionmentioning

confidence: 99%

Enhancement of magneto-optical effects by a single 1D all dielectric resonant grating

Gamet¹,

Varghese²,

Verrier³

2017

J. Phys. D: Appl. Phys.

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Longitudinal magneto-optical effect enhancement with high transmission through a 1D all-dielectric resonant guided mode grating

Bsawmaii¹,

Gamet²,

Neveu³

et al. 2020

Opt. Express

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A significant enhancement of the longitudinal magneto-optical effect is demonstrated numerically and experimentally in transmission, and for small angles of incidence, through a subwavelength resonant structure consisting of a dielectric grating on top of a magneto-optical waveguide. The enhanced polarization rotation is associated with a high transmittance. These low footprint devices may thus be suitable for applications like magnetic field sensors or in non-destructive testing.

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Magnetic nanocomposite films with photo-patterned 1D grating on top enable giant magneto-optical intensity effects

Bsawmaii

Gamet

Neveu³

et al. 2022

Opt. Mater. Express

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The enhancement of magneto-optical (MO) effects in planar devices is commonly obtained through the combination of a plasmonic resonance and a MO material, or through the microstructuration of such materials. However, the devices often suffer from weak optical signal, or require fastidious lithography processes. We present a much simpler device made of a photoresist 1D grating processed on a MO composite planar waveguide. This latter is formed by magnetic nanoparticles embedded in a silica matrix. Such all-dielectric device produces much higher Q-factor resonances, which finally result in giant MO intensity effects. Their magnitude combined with the ability of the device to be processed on large scale and various substrates, are very promising for a wide range of sensing applications.

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Nano-composite magnetic material embedded on TiO₂pillars to realize magneto-optical resonant guided mode gratings

Cited by 3 publications

References 11 publications

Enhancement of magneto-optical effects by a single 1D all dielectric resonant grating

Enhancement of magneto-optical effects by a single 1D all dielectric resonant grating

Longitudinal magneto-optical effect enhancement with high transmission through a 1D all-dielectric resonant guided mode grating

Magnetic nanocomposite films with photo-patterned 1D grating on top enable giant magneto-optical intensity effects

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Nano-composite magnetic material embedded on TiO2pillars to realize magneto-optical resonant guided mode gratings

Cited by 3 publications

References 11 publications

Enhancement of magneto-optical effects by a single 1D all dielectric resonant grating

Enhancement of magneto-optical effects by a single 1D all dielectric resonant grating

Longitudinal magneto-optical effect enhancement with high transmission through a 1D all-dielectric resonant guided mode grating

Magnetic nanocomposite films with photo-patterned 1D grating on top enable giant magneto-optical intensity effects

Contact Info

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Nano-composite magnetic material embedded on TiO₂pillars to realize magneto-optical resonant guided mode gratings