Nanoassembled Plasmonic-Photonic Hybrid Cavity for Tailored Light-Matter Coupling

Barth, Michael; Schietinger, Stefan; Fischer, Sabine; Becker, Jan; Nüsse, Nils; Aichele, Thomas; Löchel, Bernd; Sönnichsen, Carsten; Benson, Oliver

doi:10.1021/nl903555u

Cited by 197 publications

(176 citation statements)

References 35 publications

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“…S4). Promising approaches to fabricate optoplasmonic networks include twostep electron-beam (46) and soft (47) lithography, templateassisted self-assembly (48), nanoassembly (16), and optical tweezers (49, 50) (see Fig. S5 for examples of possible realizations of optoplasmonic elements).…”

Section: Resultsmentioning

confidence: 99%

Spectrally and spatially configurable superlenses for optoplasmonic nanocircuits

Boriskina

Reinhard

2011

Proc. Natl. Acad. Sci. U.S.A.

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Energy transfer between photons and molecules and between neighboring molecules is ubiquitous in living nature, most prominently in photosynthesis. While energy transfer is efficiently utilized by living systems, its adoption to connect individual components in man-made plasmonic nanocircuits has been challenged by low transfer efficiencies that motivate the development of entirely new concepts for energy transfer. We introduce herein optoplasmonic superlenses that combine the capability of optical microcavities to insulate molecule-photon systems from decohering environmental effects with the superior light nanoconcentration properties of nanoantennas. The proposed structures provide significant enhancement of the emitter radiative rate and efficient long-range transfer of emitted photons followed by subsequent refocusing into nanoscale volumes accessible to near-and far-field detection. Optoplasmonic superlenses are versatile building blocks for optoplasmonic nanocircuits and can be used to construct "dark" single-molecule sensors, resonant amplifiers, nanoconcentrators, frequency multiplexers, demultiplexers, energy converters, and dynamical switches.nanophotonics | optical information processing | optical sensing | plasmonics N onradiative energy transfer between nanoobjects is limited to distances of only a few nanometers, making photons the most attractive long-distance signal carriers. However, once the photon is emitted by a donor quantum emitter, the probability of acceptor absorbing its energy becomes negligibly small. Therefore, realizing efficient and controllable on-chip interactions between single photons and single quantum emitters, which are crucial for single-molecule optical sensing and quantum information technology, remains challenging. This problem is mitigated by optical microcavities (OMs), which can significantly boost the probability of a photon reabsorption through acceptor molecules (1) via efficient trapping and recirculating of photons (2). OMs also strongly modify radiative rate of emitters at select frequencies corresponding to cavity modes, which can provide local density of optical states (LDOS) exceeding that of the free space by orders of magnitude (2-5). In turn, noble-metal nanostructures can enhance emission of free-space photons by excited molecules (effectively acting as nano-analogs of radio antennas) (6-12) or facilitate relaxation by coupling to surface plasmons (SPs) (13-15). Consequently, both plasmonic nanostructures and OMs can modify the LDOS (16, 17), but the OM approach suffers from limited accessibility of the intracavity volume by target molecules [which should either be incorporated into the cavity material (3, 4) or interact with photonic modes via their weak evanescent tails (5,(18)(19)(20)], while high dissipative losses in metals create fundamental limitations for long-distance energy and information transfer through surface plasmons (21). Results and DiscussionIn this paper, we develop a previously undescribed approach for photon generation and energy tra...

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Section: Resultsmentioning

confidence: 99%

Spectrally and spatially configurable superlenses for optoplasmonic nanocircuits

Boriskina

Reinhard

2011

Proc. Natl. Acad. Sci. U.S.A.

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“…14 Several configurations for increasing the Q/V ratio have been investigated, amongst which the hybrid combination of dielectric and plasmonic confinement mechanisms appears to be the most promising. [15][16][17][18][19][20][21] A number of such hybrid cavities have already been studied with the aim to decrease the optical losses with respect to the plasmonic cavities and to provide very low values of mode volume. As a result, Q/V values up to 10 7 (λ/n) 3 21,22 have been predicted by simulations, with the best experimental results reaching values of 10 5 (λ/n) 3 .…”

Section: Introductionmentioning

confidence: 99%

Ultra-high Q/V hybrid cavity for strong light-matter interaction

Conteduca¹,

Reardon²,

Scullion³

et al. 2017

APL Photonics

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COLLECTIONS This paper was selected as Featured ARTICLES YOU MAY BE INTERESTED INThe ability to confine light at the nanoscale continues to excite the research community, with the ratio between quality factor Q and volume V, i.e., the Q/V ratio, being the key figure of merit. In order to achieve strong light-matter interaction, however, it is important to confine a lot of energy in the resonant cavity mode. Here, we demonstrate a novel cavity design that combines a photonic crystal nanobeam cavity with a plasmonic bowtie antenna. The nanobeam cavity is optimised for a good match with the antenna and provides a Q of 1700 and a transmission of 90%. Combined with the bowtie, the hybrid photonic-plasmonic cavity achieves a Q of 800 and a transmission of 20%, both of which remarkable achievements for a hybrid cavity. The ultra-high Q/V of the hybrid cavity is of order of 10 6 (λ/n) 3 , which is comparable to the state-of-the-art of photonic resonant cavities. Based on the high Q/V and the high transmission, we demonstrate the strong efficiency of the hybrid cavity as a nanotweezer for optical trapping. We show that a stable trapping condition can be achieved for a single 200 nm Au bead for a duration of several minutes (t trap > 5 min) and with very low optical power (P in = 190 µW).

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“…An alternative strategy for overcoming the limitations of conventional plasmonic nanocircuitry in a more compact footprint is based on the combination of plasmonic nanoantennas with dielectric microcavity resonators into structurally defined, discrete hybrid optoplasmonic structures [21,22,[33][34][35][36]. Although whispering gallery mode (WGM) resonators have larger mode volumes and, therefore tend to show lower E-field enhancements than metallic nanoantennas, their eigenmodes have low losses and, therefore, create higher Qfactors than metallic nanostructures [37].…”

Section: Introductionmentioning

confidence: 99%

Template-Guided Self-Assembly of Discrete Optoplasmonic Molecules and Extended Optoplasmonic Arrays

et al. 2015

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Abstract:The integration of metallic and dielectric building blocks into optoplasmonic structures creates new electromagnetic systems in which plasmonic and photonic modes can interact in the near-, intermediate-and farfield. The morphology-dependent electromagnetic coupling between the different building blocks in these hybrid structures provides a multitude of opportunities for controlling electromagnetic fields in both spatial and frequency domain as well as for engineering the phase landscape and the local density of optical states. Control over any of these properties requires, however, rational fabrication approaches for well-defined metal-dielectric hybrid structures. Template-guided self-assembly is a versatile fabrication method capable of integrating metallic and dielectric components into discrete optoplasmonic structures, arrays, or metasurfaces. The structural flexibility provided by the approach is illustrated by two representative implementations of optoplasmonic materials discussed in this review. In optoplasmonic atoms or molecules optical microcavities (OMs) serve as whispering gallery mode resonators that provide a discrete photonic mode spectrum to interact with plasmonic nanostructures contained in the evanescent fields of the OMs. In extended hetero-nanoparticle arrays in-plane scattered light induces geometry-dependent photonic resonances that mix with the localized surface plasmon resonances of the metal nanoparticles. We characterize the fundamental electromagnetic working principles underlying both optoplasmonic approaches and review the fabrication strategies implemented to realize them.

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Nanoassembled Plasmonic-Photonic Hybrid Cavity for Tailored Light-Matter Coupling

Cited by 197 publications

References 35 publications

Spectrally and spatially configurable superlenses for optoplasmonic nanocircuits

Spectrally and spatially configurable superlenses for optoplasmonic nanocircuits

Ultra-high Q/V hybrid cavity for strong light-matter interaction

Template-Guided Self-Assembly of Discrete Optoplasmonic Molecules and Extended Optoplasmonic Arrays

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