Back focal plane imaging of Tamm plasmons and their coupled emission

Chen, Yikai; Zhang, Douguo; Qiu, Dong; Zhu, Liangfu; Yu, Sisheng; Yao, Peijun; Wang, Pei; Ming, Hai; Badugu, Ramachandram; Lakowicz, Joseph R.

doi:10.1002/lpor.201400117

Cited by 18 publications

(22 citation statements)

References 39 publications

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“…These interface states can be regarded as analogues of edge states in Weyl semimetals [3,6,7], and they can be useful in nonlinear optics [33][34][35], quantum optics [36,37], thermal radiation [38], etc. [39][40][41][42]. The winding of the reflection phase has also been discussed in the context of adiabatic charge pumping and Floquet Weyl phases in a three-dimensional network [43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Optical Interface States Protected by Synthetic Weyl Points

et al. 2017

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Weyl fermions have not been found in nature as elementary particles, but they emerge as nodal points in the band structure of electronic and classical wave crystals. Novel phenomena such as Fermi arcs and chiral anomaly have fueled the interest in these topological points which are frequently perceived as monopoles in momentum space. Here, we report the experimental observation of generalized optical Weyl points inside the parameter space of a photonic crystal with a specially designed four-layer unit cell. The reflection at the surface of a truncated photonic crystal exhibits phase vortexes due to the synthetic Weyl points, which in turn guarantees the existence of interface states between photonic crystals and any reflecting substrates. The reflection phase vortexes have been confirmed for the first time in our experiments, which serve as an experimental signature of the generalized Weyl points. The existence of these interface states is protected by the topological properties of the Weyl points, and the trajectories of these states in the parameter space resembles those of Weyl semimetal "Fermi arc surface states" in momentum space. Tracing the origin of interface states to the topological character of the parameter space paves the way for a rational design of strongly localized states with enhanced local field.

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Section: Introductionmentioning

confidence: 99%

Optical Interface States Protected by Synthetic Weyl Points

et al. 2017

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“…The Tamm structures described in this report are simple to be fabricated over large areas using only deposition methods. The beaming near normal fluorescence emission has potential applications for the high throughput fluorescence sensing or detection [41–42]. Due to these unique merits, it is of great importance to understand the factors that affect the performance of the TPCE.…”

Section: : Introductionmentioning

confidence: 99%

Effect of metal film thickness on Tamm plasmon-coupled emission

Chen

Zhang

Zhu

et al. 2014

Phys. Chem. Chem. Phys.

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Tamm plasmons (TPs) are the result of trapping optical energy at the interface between a metal film and a one-dimensional photonic crystal. In contrast to surface plasmons, TPs display unique properties such as the ability of direct optical excitation without the aid of prisms, or gratings, being populated using both S- and P- polarized light, and importantly, they can be created with incident light normal to the surfaces. This latter property has recently been used to obtain Tamm plasmon-coupled emission (TPCE) which beams along a path directly perpendicular to the surface. In this paper the effects of metal film thickness on TPCE are investigated using back focal plane (BFP) imaging and spectral resolutions. The observed experimental results are in agreement with the numerical simulations. The present work provides the basic understanding to design the structures for TPCE, which in turn has potential applications in the fabrication of the active material for light emitting devices, fluorescence based-sensing using microarrays and imaging.

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“…TPs have been proposed and demonstrated as a novel straightforward and promising tool to engineer fluorophores emission in terms of directionality, wavelength and decay rates. [33][34][35] TPs combined with mesoporous DBR have been proven to be successfully employed as highsensitivity sensors in alternative to surface plasmons. 36 In addition, the coexistence of Tamm plasmon and surface plasmon modes in these hybrid metal/dielectric structures 37,38 could make of Tamm plasmon lasers a new approach for the development of novel efficient surface plasmon sources.…”

mentioning

confidence: 99%

Polarization-Controlled Confined Tamm Plasmon Lasers

et al. 2015

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In this paper we report on the evidence of polarized and spatially localized emission of a Tamm laser. The polarized emission results from an anisotropic three-dimensional confinement of Tamm plasmon modes at the interface between an active semiconductor distributed Bragg reflector and a silver thin-film. The spatial confinement is achieved by patterning microrectangles with an aspect ratio of 2 in the top metallic layer. This geometrical birefringence is observed to split the fundamental confined Tamm mode into two modes, which result to be orthogonally polarized along the two sides of the structure. We measure a wavelength splitting between the nondegenerate modes of ∼0.2 nm, which turns out to be in good agreement with numerical calculations. This weak splitting, together with the strong wavelength dependence of the buried quantum wells gain curve, allows us to demonstrate the existence of a highly linearly polarized laser emission at ∼850 nm. By controlling the detuning between the confined Tamm modes and the gain curve, we report on a maximum degree of linear polarization in excess of 90%.

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Back focal plane imaging of Tamm plasmons and their coupled emission

Cited by 18 publications

References 39 publications

Optical Interface States Protected by Synthetic Weyl Points

Optical Interface States Protected by Synthetic Weyl Points

Effect of metal film thickness on Tamm plasmon-coupled emission

Polarization-Controlled Confined Tamm Plasmon Lasers

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