Polarizing properties of a 2D photonic crystal slab for simultaneous in-plane and out-of-plane light incidence

Sahani, Pratyasha; Vijaya, R.

doi:10.1088/1361-6463/aad41d

Cited by 3 publications

(2 citation statements)

References 28 publications

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“…These properties of spin wave would be helping for designing specific magnetic crystal structures for controlling spin wave. The artificial crystal structures have been attracted tremendous research efforts; the well studied being optical photonic crystals and acoustic phononic crystals [138][139][140][141][142][143][144][145][146][147][148][149][150][151][152]. The third category of artificial magnetic crystal structures, so-called magnonic crystals, are the magnetic analog of photonic crystals and phononic crystals and are useful for manipulating of spin wave.…”

Section: Impurity Dependencementioning

confidence: 99%

Anomalous Behaviors of Spin Waves Studied by Inelastic Light Scattering

et al. 2019

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Magnonics, an emerging research field, aims to control and manipulate spin waves in magnetic materials and structures. However, the current understanding of spin waves remains quite limited. This review attempts to provide an overview of the anomalous behaviors of spin waves in various types of magnetic materials observed thus far by inelastic light scattering experiments. The anomalously large asymmetry of anti-Stokes to Stokes intensity ratio, broad linewidth, strong resonance effect, unique polarization selection, and abnormal impurity dependence of spin waves are discussed. In addition, the mechanisms of these anomalous behaviors of spin waves are proposed. spectroscopy is applied for studying vibrational properties of materials. However, due to the anomalous behaviors of spin wave scattering comparing with vibrational scattering, Raman spectroscopy study of spin wave is difficult and limited. In this paper, we present a review of anomalous behaviors of spin waves observed by inelastic light scattering experiments, especially by Raman spectroscopy. The large asymmetry of anti-Stokes to Stokes intensity ratio, broad linewidth, strong resonance effect, unique polarization selection, and abnormal impurity dependence of spin waves are discussed, and a proposed model for the mechanisms of spin flip, spin relaxing, and spin wave scattering is presented for understanding these anomalous behaviors of spin waves. In addition, two magnonic crystal structures are proposed for manipulating spin waves through analyses of the abnormal impurity dependence of spin waves. The review of the anomalous behaviors of spin waves and the proposed models provide the directions for easier experimental study of spin waves by inelastic light scattering, which will be useful for raising the research efforts for investigating spin waves. This is important for the emerging research of magnonics, which has received extensive interests in the modern magnetism research community.

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Section: Impurity Dependencementioning

confidence: 99%

Anomalous Behaviors of Spin Waves Studied by Inelastic Light Scattering

et al. 2019

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“…Indeed, PC membranes with in-plane periodicity and finite thickness can not only perform in-plane waveguiding [8,9] but can also interact with out-of-plane waves thanks to their complex refractive and diffractive properties induced by the occurrence of guided resonances excited by the incident waves [10][11][12][13]. Such interaction is usually presented as the Fano phenomenon [14] that may be used to design multifunctional devices [15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Modulation of the refractive properties of 1D and 2D photonic crystal polycrystalline silicon-based membranes in the MIR frequency range

Viallon¹,

Assaf²,

Treizebré³

et al. 2019

J. Phys. D: Appl. Phys.

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We have investigated, theoretically using finite difference time domain method, and experimentally using Fourier transform infrared spectroscopy, the effect of grating’s parameters on the reflective properties of ridges and holes’ photonic crystal membrane made of polycrystalline silicon in the mid-infrared (MIR) range (5–15 μm). We found that the interaction of an incident wave with the ridges and the drilled membrane modifies the reflective spectrum in a similar way. For the two geometries we first found Fabry–Perot effect due to the variation of the effective index of the membrane. Then, in both cases, we have been able to highlight the occurrence of dips in the reflection spectrum which are due to the structuration of the membrane. We showed that for the ridge structure, the mode is confined inside the ridges while for the drilled layer, the mode is spread over the whole membrane. Reflectivity tuning in the MIR frequency range can be achieved and we have calculated that the reflectivity of the photonic membrane can be modulated from 20% to at least 40%. It opens new perspectives in the fields of thermal insulation of buildings, high reflective optical mirrors and coatings and personal thermal management.

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Broadband Plasmonic Nanopolarizer Based on Different Surface Plasmon Resonance Modes in a Silver Nanorod

Wei

et al. 2020

Crystals

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Conventional polarizers including sheet, wire-grid, prism, and Brewster-angle type polarizers are not easily integrated with photonic circuits. Polarizing elements on the nanoscale are indispensable for integrated all-optical nanophotonic devices. Here, we propose a plasmonic nanopolarizer based on a silver nanorod. The polarization characteristics result from the excitation of different resonance modes of localized surface plasmons (LSPs) at different wavelengths. Furthermore, the polarization characteristics in near field regions have been demonstrated by the electric field distribution of the nanorod based on finite-difference time-domain (FDTD) simulation, indicating a strong local resonant cavity with a standing wave mode for transverse electric (TE) polarization and weak electric fields distributed for transverse magnetic (TM) polarization. The nanopolarizer can efficiently work in the near field region, exhibiting a nanopolarization effect. In addition, very high extinction ratios and extremely low insertion losses can be achieved. Particularly, the nanopolarizer can work in a broadband from visible to near-infrared wavelengths, which can be tuned by changing the aspect ratio of the nanorod. The plasmonic nanopolarizer is a promising candidate for potential applications in the integration of nanophotonic devices and circuits.

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Polarizing properties of a 2D photonic crystal slab for simultaneous in-plane and out-of-plane light incidence

Cited by 3 publications

References 28 publications

Anomalous Behaviors of Spin Waves Studied by Inelastic Light Scattering

Anomalous Behaviors of Spin Waves Studied by Inelastic Light Scattering

Modulation of the refractive properties of 1D and 2D photonic crystal polycrystalline silicon-based membranes in the MIR frequency range

Broadband Plasmonic Nanopolarizer Based on Different Surface Plasmon Resonance Modes in a Silver Nanorod

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