Quadrupole-Quadrupole Interactions to Control Plasmon-Induced Transparency

Rana, Goutam; Deshmukh, Prathmesh; Palkhivala, Shalom; Gupta, Abhishek; Duttagupta, Siddhartha P.; Prabhu, S. S.; Venugopal, A.; Agarwal, G. S.

doi:10.1103/physrevapplied.9.064015

Cited by 36 publications

(24 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Maximum quality factor is about 238, 618 when the l x =390 nm. At the weak coupling regime (0.35 μm<l x <0.45 μm), the Fano resonance possess extraordinary high Q-factor, exceeding the theoretical Q-factors of many other coupling structures [19,26,28]. In the view of coupled-oscillator model, achieving high Q-factors Fano resonance requires both γ MQz →0 and κ→0 [28].…”

Section: Coupled Oscillators Model For Analyzing the Fano Lineshape Amentioning

confidence: 98%

“…Although multipole interferences have been theoretically and experimently studied a lot in recent decades [9,[11][12][13][14][15][16][17][18][19][20][21], the realization of quadrupole interference, especially the interference between two different quadrupoles in homogeneous optical structures can still be changllenging. Like dipole interferences, highordered multipole interferences requires a same intensity for the two resonating multipoles at same wavelength.…”

Section: Introductionmentioning

confidence: 99%

“…It enables the near-field coupling between two multipoles. For example, EQ-EQ coupling has been realized in plasmonic structure recently [19] to realize plasmonic EIT effect. Through elaborately design, dark quadrupoles can also arise in dielectric structures to couple with bright quadrupoles.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characteristics of electric quadrupole and magnetic quadrupole coupling in a symmetric silicon structure

Liu

Chen

et al. 2020

New J. Phys.

View full text Add to dashboard Cite

Multipole interferences have attracted a lot of interests in last decade due to extraordinary performance on beam control and scattering shaping. However, most of previous works focused on the dipole-based interferences while the quadrupole modes and other high-order multipole modes with unique properties were of less attention. In this work, we aim to expand the present dipole-based multipole-interference regime to the quadrupole-interference regime. We study the interference between an electric quadrupole (EQ) and a magnetic quadrupole (MQ) in both isolated and periodically arranged homogeneous cross dielectric structure. Through structural parametric control, the EQ and MQ can be precisely tuned to share the same resonant intensity at a specific wavelength, resulting in a generalized Kerker effect. Moreover, a dark MQ mode, which is orthogonal with the original MQ mode, arises when we increase the interaction between structure. We find that the spectral approaching between dark MQ and original bright EQ results in an EIT effect and Fanoshaped spectral reflection response. The induced Fano spectrum possesses tunable quality factors varying from ∼10 to >10 5 with the variation of EQ-MQ coupling efficiency. The numerically derived maximum quality factor (238, 618) of the dielectric EQ-MQ coupling system even exceeds the quality factors of many plasmonic resonant systems. We also prove that such spectrum can be adopted to refractive index sensing. Besides, we show that EQ-MQ coupling can bring about rapid 2π phase change, which can be applied in metasurface designs. These results and conclusions about the EQ-MQ interference systems can provide a promising avenue for advanced optical devices.

show abstract

Section: Coupled Oscillators Model For Analyzing the Fano Lineshape Amentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characteristics of electric quadrupole and magnetic quadrupole coupling in a symmetric silicon structure

Liu

Chen

et al. 2020

New J. Phys.

View full text Add to dashboard Cite

show abstract

“…Spectral filtering is also resonantly possible in metasurfaces by interference of two different excitation pathways leading to Electromagnetically Induced Transparency (EIT) [9]. EIT has been observed in both plasmonic resonators [10][11][12][13] and all-dielectric resonators [14,15]. Plasmonic EIT filters [16][17][18] typically consists of subwavelength holes in a single metal layer.…”

Section: Introductionmentioning

confidence: 99%

Ultra-narrowband polarization insensitive transmission filter using a coupled dielectric-metal metasurface

Nagarajan¹,

Erve²,

Gerini³

2020

Opt. Express

View full text Add to dashboard Cite

A coupled dielectric-metal metasurface (CDMM) consisting of amorphous silicon (a-Si) rings and subwavelength holes in Au layer separated by a SiO 2 layer is presented. The design parameters of the CDMM is numerically optimized to have a polarization independent peak transmittance of 0.55 at 1540 nm with a Full Width at Half Maximum (FW H M) of 10 nm. The filter also has a 100 nm quite zone with ∼ 10 −2 transmittance. A radiating two-oscillator model reveals the fundamental resonances in the filter which interfere to produce the electromagnetically induced transparency (EIT) like effect. Multipole expansion of the currents in the structure validates the fundamental resonances predicted by the two-oscillator model. The presented CDMM filter is robust to artifacts in device fabrication and has performances comparable to a conventional Fabry-Pérot filter. However, it is easier to be integrated in image sensors as the transmittance peak can be tuned by only changing the periodicity resulting in a planar structure with a fixed height. arXiv:1911.07573v1 [physics.optics]

show abstract

“…Such metamaterials are designed based on a mechanical model or an electrical circuit model of EIT [5]. A unit cell of EIT-like metamaterials is composed of two dissimilar resonators coupled with each other [6][7][8][9][10][11][12][13]. One resonator has a low Q and couples to incident electromagnetic waves.…”

Section: Introductionmentioning

confidence: 99%

Tunable group delay in a doubly resonant metasurface composed of two dissimilar split-ring resonators

Tamayama

Kida

2019

J. Opt. Soc. Am. B

View full text Add to dashboard Cite

We develop a method to control the group delay of electromagnetic waves continuously using a doubly resonant metasurface. The method is based on the dependences of i) the group velocity in a medium featuring two resonance lines on the resonance linewidths and ii) the resonance linewidth of a metasurface composed of split-ring resonators on an incidence angle of electromagnetic wave. To verify this method for group-delay control, we design a terahertz metasurface composed of two split-ring resonators with different resonance frequencies and numerically analyze the transmission characteristic of the metasurface. Double resonance lines are observed for oblique incidence and the resonance transmission dips become deeper and broader with increasing the incidence angle. The group delay at around the center frequency of the double resonance lines is found to vary in the range about from 0 s to 20 times the period of the incident wave with the incidence angle. In contrast with a previously reported method for variable control of group delay using electromagnetically-induced-transparency-like metamaterials, a high transmittance is achieved for a small group delay condition.

show abstract

Quadrupole-Quadrupole Interactions to Control Plasmon-Induced Transparency

Cited by 36 publications

References 37 publications

Characteristics of electric quadrupole and magnetic quadrupole coupling in a symmetric silicon structure

Characteristics of electric quadrupole and magnetic quadrupole coupling in a symmetric silicon structure

Ultra-narrowband polarization insensitive transmission filter using a coupled dielectric-metal metasurface

Tunable group delay in a doubly resonant metasurface composed of two dissimilar split-ring resonators

Contact Info

Product

Resources

About