A wide bandgap plasmonic Bragg reflector

Liu, Jian Qiang; Wang, Lingling; He, Meng-Dong; Huang, Wei‐Qing; Wang, Dianyuan; Zou, Bing-Song; Wen, Shuangchun

doi:10.1364/oe.16.004888

Cited by 138 publications

(78 citation statements)

References 17 publications

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“…10 The bandgap width could be widened by inserting the high index material into narrower slits with wider ones unfilled. 11,12 By introducing an defect in the periodicity, plasmonic nanocavity can be formed and can be used in filters, low-threshold lasers and light-emitting diodes. 11,12 Based on the transfer-matrix method, finite planar MIM plasmonic waveguides have been systematically investigated, where bound and leaky surface plasmon modes coexist.…”

Section: Introductionmentioning

confidence: 99%

“…11,12 By introducing an defect in the periodicity, plasmonic nanocavity can be formed and can be used in filters, low-threshold lasers and light-emitting diodes. 11,12 Based on the transfer-matrix method, finite planar MIM plasmonic waveguides have been systematically investigated, where bound and leaky surface plasmon modes coexist. 13 To solve the technical problems of MIM plasmonic Bragg reflectors (PBRs) with step profiles, sawtooth profiles are proposed and numerical study reveals that they have lower insertion loss, narrower bandgap, and reduced rippling in the transmission spectrum when compared with the step PBRs.…”

Section: Introductionmentioning

confidence: 99%

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Strong coupling effects between a meta-atom and MIM nanocavity

Chen

Liu

et al. 2012

AIP Advances

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In this paper, we investigate the strong coupling effects between a meta-atom and a metal-insulator-metal (MIM) nanocavity. By changing the meta-atom sizes, we achieve the meta-atomic electric dipole, quadrupole or multipole interaction with the plasmonic nanocavity, in which characteristic anticrossing behaviors demonstrate the occurrence of the strong coupling. The various interactions present obviously different splitting values and behaviors of dependence on the meta-atomic position. The largest Rabi-type splittings, about 360.0 meV and 306.1 meV, have been obtained for electric dipole and quadrupole interaction, respectively. We attribute the large splitting to the highly-confined cavity mode and the large transition dipole of the meta-atom. Also the Rabi-type oscillation in time domain is given

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Strong coupling effects between a meta-atom and MIM nanocavity

Chen

Liu

et al. 2012

AIP Advances

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“…Another possible extension of this work is the application of the SMM method to periodic structures. These structures are interesting for potential Bragg resonances [28,29]. This would require using periodic conditions (or scaled periodic conditions when including losses) in the matrix calculations.…”

Section: Extensions Of This Workmentioning

confidence: 99%

Squeezing light into subwavelength metallic tapers: single mode matching method

Qiao

Gordon

2009

J. Nanophoton

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Abstract.A simple single mode matching (SMM) method is proposed to analyze the optical throughput for subwavelength metal tapers. Both a 2D gold-clad taper gap and a 3D gold taper rod are analyzed with the SMM method. Including metal losses, these structures are calculated to have optimal squeezing taper angles of 14° with 71% efficiency and 32° with 44% efficiency, which is in good quantitative agreement with previous finite-difference timedomain simulations. The SMM method uses only analytic calculations and 2-by-2 matrix multiplication. Therefore, compared to past approaches, the SMM method is an efficient method to optimize the subwavelength metallic taper structures, while including losses, and it can be extended to more complex tapers and gratings in an obvious way. It also has the potential for fully analytic calculations.

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“…Although Insulator-Metal-Insulator (IMI) waveguides have the advantage of less loss for the longer propagation distance, but their light confinement capability into subwavelength scales is poor [18]. Numerous functional plasmonic MIM structures like directional couplers [19], filters [20], Y-shaped combiners [21], sensors [22], U-shaped waveguides [23], Bragg reflectors [24], etc, have been numerically and/or experimentally investigated.…”

Section: Introductionmentioning

confidence: 99%

Active Focusing of Light in Plasmonic Lens via Kerr Effect

Nasari

Abrishamian

2012

Journal of the Optical Society of Korea

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We numerically demonstrate the performance of a plasmonic lens composed of an array of nanoslits perforated on thin metallic film with slanted cuts on the output surface. Embedding Kerr nonlinear material in nanoslits is employed to modulate the output beam. A two dimensional nonlinear-dispersive finitedifference time-domain (2D N-D-FDTD) method is utilized. The performance parameters of the proposed lens such as focal length, full-width half-maximum, depth of focus and the efficiency of focusing are investigated. The structure is illuminated by a TM-polarized plane wave and a Gaussian beam. The effect of the beam waist of the Gaussian beam and the incident light intensity on the focusing effect is explored. An exact formula is proposed to derive electric field E from electric flux density D in a Kerr-Dispersive medium. Surface plasmon (SPs) modes and Fabry-Perot (F-P) resonances are used to explain the physical origin of the light focusing phenomenon. Focused ion beam milling can be implemented to fabricate the proposed lens. It can find valuable potential applications in integrated optics and for tuning purposes.

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A wide bandgap plasmonic Bragg reflector

Cited by 138 publications

References 17 publications

Strong coupling effects between a meta-atom and MIM nanocavity

Strong coupling effects between a meta-atom and MIM nanocavity

Squeezing light into subwavelength metallic tapers: single mode matching method

Active Focusing of Light in Plasmonic Lens via Kerr Effect

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