Bound States in the Continuum in Magnetophotonic Metasurfaces

Chernyak, A. M.; Barsukova, Maria G.; Shorokhov, Alexander S.; Musorin, A. I.; Fedyanin, Andrey A.

doi:10.1134/s0021364020010105

Cited by 39 publications

(14 citation statements)

References 20 publications

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“…Notably, the SHG power possesses a squared relationship with the increasing excited average pump power (in the left inset), showing a linear trend with a slope of 2 in the log plot. The results agree well with the equation [15,39] log( ) 2log( )  SH FW avg avg PP (8) Here,…”

Section: Giant Sh Response Assisted Quasi-bicsupporting

confidence: 87%

“…Bound states in the continuum (BICs) are ubiquitous physical phenomena, which were originally proposed in hypothetical quantum system by Neumann and Wigner [1][2][3]. It is a general wave phenomenon that has been not only found in many physical systems including photonic crystal [4],optical grating and waveguide [5,6], metasurfaces [7,8], but also have been utilized to realized some interesting physical phenomena such as diffraction-free beam guiding beyond light cone [9] and the enhancement of Goos-Hä nchen Shift [10]. Spectrally, BICs are the points where two resonant waves interfere, leaving one resonance with the quality factor (Q-factor) diverging to infinity.…”

Section: Introductionmentioning

confidence: 99%

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Highly efficient second harmonic generation of thin film lithium niobate nanograting near bound states in the continuum

et al. 2021

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Bound states in the continuum (BICs) are ubiquitous physical phenomena where such states occur due to strong coupling between leaky modes in side lossy systems. BICs in meta-optics and nanophotonics enable optical mode confinement to strengthen local field enhancement in nonlinear optics. In this study, we numerically investigate second-harmonic generation (SHG) in the vicinity of BICs with a photonic structure comprising one-dimensional nanogratings and a slab waveguide made of lithium niobate (LiNbO3, LN). By breaking the symmetry of LN nanogratings, BICs transition to quasi-BICs, which enable strong local field confinement inside LN slab waveguide to be supported, thereby resulting in improving SHG conversion with lower pump power of fundamental frequency (FW). With a peak intensity of 1.33 GW cm−2 at the FW, our structure features a second-harmonic conversion efficiency up to 8.13 × 10−5 at quasi-BICs. We believe that our results will facilitate the application of LN in integrated nonlinear nanophotonic.

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Section: Giant Sh Response Assisted Quasi-bicsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Highly efficient second harmonic generation of thin film lithium niobate nanograting near bound states in the continuum

et al. 2021

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“…The predictions of exclusive B u,d,sdecays into light pseudoscalar and vector mesons in the context of CP violation and CKM quark mixing matrix require the precise study of SU(3) flavor symmetry breaking effect in the DAs of mesons having strange quark. The hadronic DAs of light mesons were investigated in the pioneering work of Brodsky and Lepage followed by many other studies [4][5][6][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. The hadronic DAs of the heavy B-mesons were first investigated by Grozin and Neubert within the heavy quark effective theory (HQET) [25] followed by other studies [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Twist-2 pseudoscalar and vector meson distribution amplitudes in light-front quark model with exponential-type confining potential

Dhiman

Dahiya

et al. 2019

Phys. Rev. D

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We study the twist-2 distribution amplitudes (DAs) and the decay constants of pseudoscalar light (π, K) and heavy (D, D s , B, B s ) mesons as well as the longitudinally and transversely polarized vector light (s ) mesons in the light-front quark model with the Coulomb plus exponential-type confining potential V exp = a + be αr in addition to the hyperfine interaction. We first compute the mass spectra of ground state pseudoscalar and vector light and heavy mesons and fix the model parameters necessary for the analysis, applying the variational principle with the trial wave function up to the first three lowest order harmonic oscillator (HO) wave functions Φ(x, k ⊥ ) = 3 n=1 c n φ nS . We then obtain the numerical results for the corresponding decay constants of light and heavy mesons. We estimate the DAs, analyze their variation as a function of momentum fraction and compute the first six ξ-moments of the B and D mesons as well. We compare our results with the available experimental data as well as with the other theoretical model predictions.

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“…[220][221][222] BIC applications: optical detection, laser generation, nonlinear optics BICs and quasi-BICs are widely used for various applications in photonic crystal slabs, waveguides, single subwavelength particles and other platforms. BIC-based applications include filtering, [225][226][227][228] lasing, 71,92,100,120,229-235 magnetophotonics, [236][237][238][239] detection of biological objects, 219,223,224,[240][241][242][243][244][245][246][247][248] nonlinear generation and self-action, 22,29,115,121,122,183,[249][250][251][252][253][254][255][256][257][258][259][260] vortex generation, 94,102,261 on-chip photonic devices, 97,228,…”

Section: Asymmetric Metasurfaces and Quasi-bicsmentioning

confidence: 99%

Bound states in the continuum in photonic structures

et al. 2021

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Bound states in the continuum provide a remarkable example of how a simple problem solved about a century ago in quantum mechanics can drive the research on a whole spectrum of resonant phenomena in wave physics. Due to their huge radiative lifetime, bound states in the continuum have found multiple applications in various areas of physics devoted to wave processes, including hydrodynamics, atomic physics, and acoustics. In this review paper, we present a comprehensive description of bound states in the continuum and related effects, focusing mainly on photonic dielectric structures. We review the history of this area, basic physical mechanisms in the formation of bound states in the continuum, and specific examples of structures supporting such states. We also discuss their possible applications in optics, photonics, and radiophysics.

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Bound States in the Continuum in Magnetophotonic Metasurfaces

Cited by 39 publications

References 20 publications

Highly efficient second harmonic generation of thin film lithium niobate nanograting near bound states in the continuum

Highly efficient second harmonic generation of thin film lithium niobate nanograting near bound states in the continuum

Twist-2 pseudoscalar and vector meson distribution amplitudes in light-front quark model with exponential-type confining potential

Bound states in the continuum in photonic structures

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