Modal Coupling of Single Photon Emitters Within Nanofiber Waveguides

Gaio, Michele; Moffa, Maria; Castro-López, Marta; Pisignano, Dario; Camposeo, Andrea; Sapienza, Riccardo

doi:10.1021/acsnano.6b02057

Cited by 34 publications

(51 citation statements)

References 41 publications

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“…Fibers with single QDs were excited under laser excitation (633 nm) (see Figure 8), and coupling efficiency was measured through momentum spectroscopy. In room-temperature conditions, the broadband coupling efficiency to an ONF from an individual QD was measured to be 31% of the emitted light [302].…”

Section: Nanofiber Waveguidementioning

confidence: 99%

Electrospinning for nano- to mesoscale photonic structures

et al. 2016

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Abstract:The fabrication of photonic and electronic structures and devices has directed the manufacturing industry for the last 50 years. Currently, the majority of small-scale photonic devices are created by traditional microfabrication techniques that create features by processes such as lithography and electron or ion beam direct writing. Microfabrication techniques are often expensive and slow. In contrast, the use of electrospinning (ES) in the fabrication of microand nano-scale devices for the manipulation of photons and electrons provides a relatively simple and economic viable alternative. ES involves the delivery of a polymer solution to a capillary held at a high voltage relative to the fiber deposition surface. Electrostatic force developed between the collection plate and the polymer promotes fiber deposition onto the collection plate. Issues with ES fabrication exist primarily due to an instability region that exists between the capillary and collection plate and is characterized by chaotic motion of the depositing polymer fiber. Material limitations to ES also exist; not all polymers of interest are amenable to the ES process due to process dependencies on molecular weight and chain entanglement or incompatibility with other polymers and overall process compatibility. Passive and active electronic and photonic fibers fabricated through the ES have great potential for use in light generation and collection in optical and electronic structures/ devices. ES produces fiber devices that can be combined with inorganic, metallic, biological, or organic materials for novel device design. Synergistic material selection and postprocessing techniques are also utilized for broad-ranging applications of organic nanofibers that span from biological to electronic, photovoltaic, or photonic. As the ability to electrospin optically and/or electronically active materials in a controlled manner continues to improve, the complexity and diversity of devices fabricated from this process can be expected to grow rapidly and provide an alternative to traditional resource-intensive fabrication techniques.

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Section: Nanofiber Waveguidementioning

confidence: 99%

Electrospinning for nano- to mesoscale photonic structures

et al. 2016

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“…For example, in nanophotonic networks formed by interconnected optical waveguides, the complex and multiple interference of the many recurrent loops can lead to topology-dependent mode formation, as shown in a different context by quantum graph theory [10], with high quality factors or a specific spectral profile. A low-dimensional multiple scattering architecture can also enhance the interaction of light and promote coupling of emitters, due to spatial confinement in quasi-1D or 2D systems [11][12][13]. In addition, in a photonic network, light scattering occurring at the nodes and long-distance light transport are decoupled, which enables the scattering strength to be designed via the connectivity (i.e.…”

Section: Introductionmentioning

confidence: 99%

A nanophotonic laser on a graph

et al. 2019

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Conventional nanophotonic schemes minimise multiple scattering to realise a miniaturised version of beam-splitters, interferometers and optical cavities for light propagation and lasing. Here instead, we introduce a nanophotonic network built from multiple paths and interference, to control and enhance light-matter interaction via light localisation. The network is built from a mesh of subwavelength waveguides, and can sustain localised modes and mirror-less light trapping stemming from interference over hundreds of nodes. With optical gain, these modes can easily lase, reaching ~100 pm linewidths. We introduce a graph solution to the Maxwell’s equation which describes light on the network, and predicts lasing action. In this framework, the network optical modes can be designed via the network connectivity and topology, and lasing can be tailored and enhanced by the network shape. Nanophotonic networks pave the way for new laser device architectures, which can be used for sensitive biosensing and on-chip optical information processing.

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“…Interest in this process has been spurred by the possibility of tailoring the material composition and the physical properties of nanocomposite nanofibers [6]. Examples include reinforced yarns with carbon nanotubes [7], fluorescent quantum dots embedded in fibers to show suppressed energy transfer [8] or single-photon coupling to optical modes transmitted in sub-wavelength waveguides [9], nanodiamonds loaded at high concentrations to obtain coatings for UV protection and scratch resistance [10], application of metal NPs to surface-enhanced Raman scattering [11] and to nonvolatile flash memories [12].In all aforementioned applications, the polymer component serves as a three-dimensional topological network of filaments in which NPs compose distributed functional domains. However, encoding the spatially-resolved information embedded in the nanofibers requires a detailed understanding of the way that electrospinning instabilities are modulated by the presence of NPs or clusters thereof, which can profoundly affect the ultimate jet morphology.…”

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confidence: 99%

Effects of nanoparticles on the dynamic morphology of electrified jets

Lauricella¹,

Pisignano²,

Succi³

2017

EPL

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We investigate the effects of nanoparticles on the onset of varicose and whipping instabilities in the dynamics of electrified jets. In particular, we show that the non-linear interplay between the mass of the nanoparticles and electrostatic instabilities, gives rise to qualitative changes of the dynamic morphology of the jet, which in turn, drastically affect the final deposition pattern in electrospinning experiments. It is also shown that even a tiny amount of excess mass, of the order of a few percent, may more than double the radius of the electrospun fiber, with substantial implications for the design of experiments involving electrified jets as well as spun organic fibers.Dynamic instabilities of charged polymeric liquid jets play a crucial role in many natural phenomena and industrial processes, such as electrospinning, ink-jet printing, electrospray, and many others [1,2,3,4,5].In this Letter, we investigate the effects of nanoparticles (NPs) inserted in a polymeric liquid bulk on the resulting charged jet dynamics (see Fig. 1). Interest in this process has been spurred by the possibility of tailoring the material composition and the physical properties of nanocomposite nanofibers [6]. Examples include reinforced yarns with carbon nanotubes [7], fluorescent quantum dots embedded in fibers to show suppressed energy transfer [8] or single-photon coupling to optical modes transmitted in sub-wavelength waveguides [9], nanodiamonds loaded at high concentrations to obtain coatings for UV protection and scratch resistance [10], application of metal NPs to surface-enhanced Raman scattering [11] and to nonvolatile flash memories [12].In all aforementioned applications, the polymer component serves as a three-dimensional topological network of filaments in which NPs compose distributed functional domains. However, encoding the spatially-resolved information embedded in the nanofibers requires a detailed understanding of the way that electrospinning instabilities are modulated by the presence of NPs or clusters thereof, which can profoundly affect the ultimate jet morphology. Despite the major interest in above phenomena, to the best of our knowledge, numerical investigations of the dynamic behavior of electrified jets loaded with NPs are still lacking. In this Letter we take a first step along this line.In the present study, we extend the discrete element model originally introduced by Reneker and co-workers [13], as discussed in Refs. [14,15], and recently implemented in the open source code JETSPIN [16,17].Briefly, the jet is discretized into n particle-like elements, representing a cylindrical jet segment, each labeled by the discrete index i = 1, .., n, with mass m i , charge q i and volume V i . Each jet element is inserted at the nozzle at a mutual distance l i = l step (initial length step of discretization), * Electronic address: m.lauricella@iac.cnr.it; Corresponding author 1 arXiv:1710.01246v2 [physics.comp-ph] 12 Oct 2017 Figure 1: On the top, a simulation snapshot illustrating the electrospin...

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Modal Coupling of Single Photon Emitters Within Nanofiber Waveguides

Cited by 34 publications

References 41 publications

Electrospinning for nano- to mesoscale photonic structures

Electrospinning for nano- to mesoscale photonic structures

A nanophotonic laser on a graph

Effects of nanoparticles on the dynamic morphology of electrified jets

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