Готові списки джерел за темами / Plasmonic lattice

Добірка наукової літератури з теми "Plasmonic lattice"

Автор: Grafiati
Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Plasmonic lattice"

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Spektor, Grisha, Eva Prinz, Michael Hartelt, Anna-Katharina Mahro, Martin Aeschlimann, and Meir Orenstein. "Orbital angular momentum multiplication in plasmonic vortex cavities." Science Advances 7, no. 33 (August 2021): eabg5571. http://dx.doi.org/10.1126/sciadv.abg5571.

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Orbital angular momentum of light is a core feature in photonics. Its confinement to surfaces using plasmonics has unlocked many phenomena and potential applications. Here, we introduce the reflection from structural boundaries as a new degree of freedom to generate and control plasmonic orbital angular momentum. We experimentally demonstrate plasmonic vortex cavities, generating a succession of vortex pulses with increasing topological charge as a function of time. We track the spatiotemporal dynamics of these angularly decelerating plasmon pulse train within the cavities for over 300 femtoseconds using time-resolved photoemission electron microscopy, showing that the angular momentum grows by multiples of the chiral order of the cavity. The introduction of this degree of freedom to tame orbital angular momentum delivered by plasmonic vortices could miniaturize pump probe–like quantum initialization schemes, increase the torque exerted by plasmonic tweezers, and potentially achieve vortex lattice cavities with dynamically evolving topology.
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2

Liu, Jianxi, Weijia Wang, Danqing Wang, Jingtian Hu, Wendu Ding, Richard D. Schaller, George C. Schatz, and Teri W. Odom. "Spatially defined molecular emitters coupled to plasmonic nanoparticle arrays." Proceedings of the National Academy of Sciences 116, no. 13 (March 8, 2019): 5925–30. http://dx.doi.org/10.1073/pnas.1818902116.

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This paper describes how metal–organic frameworks (MOFs) conformally coated on plasmonic nanoparticle arrays can support exciton–plasmon modes with features resembling strong coupling but that are better understood by a weak coupling model. Thin films of Zn-porphyrin MOFs were assembled by dip coating on arrays of silver nanoparticles (NP@MOF) that sustain surface lattice resonances (SLRs). Coupling of excitons with these lattice plasmons led to an SLR-like mixed mode in both transmission and transient absorption spectra. The spectral position of the mixed mode could be tailored by detuning the SLR in different refractive index environments and by changing the periodicity of the nanoparticle array. Photoluminescence showed mode splitting that can be interpreted as modulation of the exciton line shape by the Fano profile of the surface lattice mode, without requiring Rabi splitting. Compared with pristine Zn-porphyrin, hybrid NP@MOF structures achieved a 16-fold enhancement in emission intensity. Our results establish MOFs as a crystalline molecular emitter material that can couple with plasmonic structures for energy exchange and transfer.
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3

Sahai, Aakash A., Mark Golkowski, Stephen Gedney, Thomas Katsouleas, Gerard Andonian, Glen White, Joachim Stohr, et al. "PetaVolts per meter Plasmonics: introducing extreme nanoscience as a route towards scientific frontiers." Journal of Instrumentation 18, no. 07 (July 1, 2023): P07019. http://dx.doi.org/10.1088/1748-0221/18/07/p07019.

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Abstract A new class of plasmons has opened access to unprecedented PetaVolts per meter electromagnetic fields which can transform the paradigm of scientific and technological advances. This includes non-collider searches in fundamental physics in addition to making next generation colliders feasible. PetaVolts per meter plasmonics relies on this new class of plasmons uncovered by our work in the large amplitude limit of collective oscillations of quantum electron gas. This Fermi gas constituted by “free” conduction band electrons is inherent in conductive media endowed with a suitable combination of constituent atoms and ionic lattice structure. As this quantum gas of electrons can be as dense as 1024 cm-3, the coherence limit of plasmonic electromagnetic fields is extended in our model from the classical to the quantum domain, 0.1 √(n 0(1024 cm-3)) PVm-1. Appropriately engineered, structured materials that allow highly tunable material properties also make it possible to overcome disruptive instabilities that dominate the interactions in bulk media. The ultra-high density of conduction electrons and the existence of electronic energy bands engendered by the ionic lattice is only possible due to quantum mechanical effects. Based on this framework, it is critical to address various challenges that underlie PetaVolts per meter plasmonics including stable excitation of plasmons while accounting for their effects on the ionic lattice and the electronic energy band structure over femtosecond timescales. We summarize the challenges and ongoing efforts that set the strategy for the future. Extreme plasmonic fields can shape the future by not only opening the possibility of tens of TeV to multi-PeV center-of-mass-energies but also enabling novel pathways in non-collider HEP. In view of this promise, our efforts are dedicated to realization of the immense potential of PV/m plasmonics and its applications.
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Proctor, Matthew, Paloma A. Huidobro, Stefan A. Maier, Richard V. Craster, and Mehul P. Makwana. "Manipulating topological valley modes in plasmonic metasurfaces." Nanophotonics 9, no. 3 (February 4, 2020): 657–65. http://dx.doi.org/10.1515/nanoph-2019-0408.

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Анотація:
AbstractCoupled light-matter modes supported by plasmonic metasurfaces can be combined with topological principles to yield subwavelength topological valley states of light. This study gives a systematic presentation of the topological valley states available for lattices of metallic nanoparticles (NPs): all possible lattices with hexagonal symmetry are considered as well as valley states emerging on a square lattice. Several unique effects that have yet to be explored in plasmonics are identified, such as robust guiding, filtering, and splitting of modes, as well as dual-band effects. These are demonstrated by means of scattering computations based on the coupled dipole method that encompass full electromagnetic interactions between NPs.
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5

Anulytė, Justina, Ernesta Bužavaitė-Vertelienė, Evaldas Stankevičius, Kernius Vilkevičius, and Zigmas Balevičius. "High Spectral Sensitivity of Strongly Coupled Hybrid Tamm-Plasmonic Resonances for Biosensing Application." Sensors 22, no. 23 (December 3, 2022): 9453. http://dx.doi.org/10.3390/s22239453.

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Анотація:
In this study, the sensitivity to the refractive index changes of the ambient was studied on the uniform gold film (~50 nm) with a 1D photonic crystal (PC) from periodic five TiO2 (~110 nm)/SiO2 (~200 nm) bilayers and gold nano-bumps array produced by direct laser writing on the same sample. The optical signal sensitivity of hybrid plasmonic resonances was compared with traditional surface plasmon resonance (SPR) on a single gold layer. The influence of the strong coupling regime between Tamm plasmon polariton (TPP) and propagated plasmon polaritons in the hybrid plasmonic modes on the sensitivity of the optical was discussed. Recent studies have shown very high hybrid plasmonic mode sensitivity SHSPP ≈ 26,000 nm/RIU to the refractive index on the uniform gold layer; meanwhile, the introduction of gold lattice reduces the signal sensitivity, but increases the Q-factor of the plasmonic resonances. Despite this, the sensitivity to the ellipsometric parameters Ψ and Δ on the gold lattice was rather high due to the increased Q-factor of the resonances. The comparison of plasmonic resonance sensitivity to the refractive index changes of hybrid TPP-SPP mode on the uniform gold layer and traditional SPR have shown that hybrid plasmonic mode, due to a strong coupling effect, overcomes the SPR by about 27%.
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6

Zhuo, Liqiang, Huiru He, Ruimin Huang, Zhi Li, Weibin Qiu, Fengjiang Zhuang, Shaojian Su, Zhili Lin, Beiju Huang, and Qiang Kan. "Flat band of Kagome lattice in graphene plasmonic crystals." Journal of Physics D: Applied Physics 55, no. 6 (November 2, 2021): 065106. http://dx.doi.org/10.1088/1361-6463/ac30fe.

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Анотація:
Abstract We propose graphene plasmonic crystals (GPCs) with a Kagome lattice, and investigate the properties of the flat band (FB) in the plasmonic system. By modulating the arrangement of the chemical potentials, a FB is obtained. Furthermore, the authenticity of the FB is confirmed by comparing the band structures and the eigen field distributions obtained from using the tight-binding modeled Hamiltonian with numerical calculations. The proposed Kagome-type GPCs could be of great significance for the study of novel effects in strong interaction systems in the field of plasmonics.
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7

Fradkin, Ilia M., Andrey A. Demenev, Vladimir D. Kulakovskii, Vladimir N. Antonov, and Nikolay A. Gippius. "Plasmonic grating for circularly polarized outcoupling of waveguide-enhanced spontaneous emission." Applied Physics Letters 120, no. 17 (April 25, 2022): 171702. http://dx.doi.org/10.1063/5.0085786.

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Анотація:
Plasmonic metasurfaces form a convenient platform for light manipulation at the nanoscale due to their specific localized surface plasmons. Even despite high intrinsic Joule losses, plasmonic nanoparticles are very effective for light manipulation. Here, we show the lattice of plasmonic nanoparticles onto a dielectric waveguide that efficiently couples oppositely propagating guided modes to circularly polarized light beams of different handedness. We demonstrate 80% degree of circular polarization for the out-coupled emission of GaAs-waveguide-embedded quantum dots. The results allow us to consider the lattice as a circular-polarization-controlled grating coupler and make this structure prospective for further implementation as an efficient coupling interface for integrated devices.
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8

Fradkin, Ilia M., Andrey A. Demenev, Vladimir D. Kulakovskii, Vladimir N. Antonov, and Nikolay A. Gippius. "Plasmonic grating for circularly polarized outcoupling of waveguide-enhanced spontaneous emission." Applied Physics Letters 120, no. 17 (April 25, 2022): 171702. http://dx.doi.org/10.1063/5.0085786.

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Анотація:
Plasmonic metasurfaces form a convenient platform for light manipulation at the nanoscale due to their specific localized surface plasmons. Even despite high intrinsic Joule losses, plasmonic nanoparticles are very effective for light manipulation. Here, we show the lattice of plasmonic nanoparticles onto a dielectric waveguide that efficiently couples oppositely propagating guided modes to circularly polarized light beams of different handedness. We demonstrate 80% degree of circular polarization for the out-coupled emission of GaAs-waveguide-embedded quantum dots. The results allow us to consider the lattice as a circular-polarization-controlled grating coupler and make this structure prospective for further implementation as an efficient coupling interface for integrated devices.
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9

Sadeghi, Seyed M., Rithvik R. Gutha, and Christina Sharp. "Coherent optical coupling of plasmonic dipoles in metallic nanoislands with random sizes and shapes." Journal of Materials Chemistry C 7, no. 31 (2019): 9678–85. http://dx.doi.org/10.1039/c9tc03351c.

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10

Kou, Yao, Fangwei Ye, and Xianfeng Chen. "Surface plasmonic lattice solitons." Optics Letters 37, no. 18 (September 11, 2012): 3822. http://dx.doi.org/10.1364/ol.37.003822.

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Дисертації з теми "Plasmonic lattice"

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Saad-Bin-Alam, Md. "Analysis of Plasmonic Metastructures for Engineered Nonlinear Nanophotonics." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39120.

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Анотація:
This Master’s dissertation focuses on engineering artificial nanostructures, namely, arrays of metamolecules on a substrate (metasurfaces), with the goal to achieve the desired linear and nonlinear optical responses. Specifically, a simple analytical model capable of predicting optical nonlinearity of an individual metamolecule has been developed. The model allows one to estimate the nonlinear optical response (linear polarizability and nonlinear hyperpolarizabilities) of a metamolecule based on the knowledge of its shape, dimensions, and material. In addition, a new experimental approach to measure hyperpolarizability has also been investigated. As another research effort, a 2D plasmonic metasurface with the collective behaviour of the metamolecules known as hybrid plasmonic-Fabry-Perot cavity and surface lattice resonances was designed, fabricated and optically characterized. We experimentally discovered a novel way of coupling the microcavity resonances and the diffraction orders of the plasmonic metamolecule arrays with the low-quality plasmon resonance to generate multiple sharp resonances with the higher quality factors. Finally, we experimentally observed and demonstrated a record ultra-high-Q surface lattice resonance from a plasmonic metasurface. These novel results can be used to render highly efficient nonlinear optical responses relying on high optical field localization, and can serve as the stepping stone towards achieving practical artificial nanophotonic devices with tailored linear and nonlinear optical responses.
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2

Humphrey, Alastair Dalziell. "Exploration of how light interacts with arrays of plasmonic, metallic nanoparticles." Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/19365.

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The content of this thesis is based upon the interaction of light with metallic nanoparticles arranged in different array geometries. An incident electric field (light) can force the conduction electrons of a metallic nanoparticle to oscillate. At particular frequencies, in the optical regime for gold and silver particles, absorption and scattering of the light by the particle is enhanced, corresponding to the particle plasmon resonance. The spectral position and width of the particle plasmon resonance of an isolated single particle may be tuned by adjusting its size and shape, thus changing the surface charge distribution. Periodic arrays of particles offer additional control over the frequency and width of the resonance attributed to the re-radiating (scattering) property of plasmonic particles. By fabricating arrays with a pitch comparable to the wavelength of an isolated single particle plasmon resonance, a coherent interaction between particles may be produced, known as surface lattice resonances (SLRs). The electromagnetic coupling between in-plane particle plasmon modes for different particle array geometries is explored through experiment and theory. Firstly, SLRs in square, hexagonal and honeycomb arrays are investigated by normal-incidence extinction measurements and compared to a simple-coupled dipole model. Secondly, to verify the nature of the coupling between the scattered electric field associated with particle resonances, the incident electric field polarization-dependence of the extinction of rectangular arrays and chains is studied. Thirdly, the optical response of square arrays with a symmetric two-particle basis is investigated, particularly the retardation of the scattered electric field between particles in a pair. Fourthly, square arrays with an asymmetric two-particle basis are fabricated to explore the symmetric (dipole moments of both particles are parallel) and anti-symmetric (dipole moment of both particles anti-parallel) SLRs, excited by normal-incidence light.
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3

Danilov, Artem. "Design, characterisation and biosensing applications of nanoperiodic plasmonic metamaterials." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0110/document.

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Анотація:
Cette thèse considère de nouvelles architectures prometteuses des métamatériaux plasmoniques pour biosensing, comprenant: (I) des réseaux périodiques 2D de nanoparticules d'Au, qui peuvent supporter des résonances des réseaux de surface couplées de manière diffractive; (II) Reseaux 3D à base de cristaux plasmoniques du type d'assemblage de bois. Une étude systématique des conditions d'excitation plasmonique, des propriétés et de la sensibilité à l'environnement local dans ces géométries métamatérielles est présentée. On montre que de tels réseaux peuvent combiner une très haute sensibilité spectrale (400 nm / RIU et 2600 nm / RIU, ensemble respectivement) et une sensibilité de phase exceptionnellement élevée (> 105 deg./RIU) et peuvent être utilisés pour améliorer l'état actuel de la technologie de biosensing the-art. Enfin, on propose une méthode de sondage du champ électrique excité par des nanostructures plasmoniques (nanoparticules uniques, dimères). On suppose que cette méthode aidera à concevoir des structures pour SERS (La spectroscopie du type Raman à surface renforcée), qui peut être utilisée comme une chaîne d'information supplémentaire à un biocapteur de transduction optique
This thesis consideres novel promissing architechtures of plasmonic metamaterial for biosensing, including: (I) 2D periodic arrays of Au nanoparticles, which can support diffractively coupled surface lattice resonances; (II) 3D periodic arrays based on woodpile-assembly plasmonic crystals, which can support novel delocalized plasmonic modes over 3D structure. A systematic study of conditions of plasmon excitation, properties and sensitivity to local environment is presented. It is shown that such arrays can combine very high spectral sensitivity (400nm/RIU and 2600 nm/RIU, respectively) and exceptionally high phase sensitivity (> 105 deg./RIU) and can be used for the improvement of current state-of-the-art biosensing technology. Finally, a method for probing electric field excited by plasmonic nanostructures (single nanoparticles, dimers) is proposed. It is implied that this method will help to design structures for SERS, which will later be used as an additional informational channel for biosensing
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4

Huang, Wenyu. "Fundamental studies of the interaction between femtosecond laser and patterned monolayer plasmonic nanostructures." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/24786.

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Thesis (Ph. D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2008.
Committee Chair: El-Sayed, Mostafa A.; Committee Member: Perry, Joseph W.; Committee Member: Srinivasarao, Mohan; Committee Member: Whetten, Robert L.; Committee Member: Zhang, Z. John.
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5

Carrega, Matteo. "Coulomb drag and Dirac plasmons in novel 2D electron systems." Doctoral thesis, Scuola Normale Superiore, 2014. http://hdl.handle.net/11384/85870.

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[from the introduction]: This Thesis focusses on the physics of e-e interactions in single-layer graphene and on the role of interlayer e-e interactions in vertical heterostructures comprised of two closely spaced graphene sheets.
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6

Buller, Jakov. "Structure and Dynamics of Microcavity Exciton-Polaritons in Acoustic Square Lattices." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19328.

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Exziton-Polaritonen in Mikrokavitäten sind Quasi-Teilchen, die unter bestimmten physikalischen Konditionen kondensieren und damit in einen energetisch gleichen, gemeinsamen makroskopischen Quantenzustand (MQZ) übergehen können. Exziton-Polariton-Kondensate können mithilfe von akustischen Oberflächenwellen moduliert werden, um ihre Eigenschaften zu verändern. Dies ist insbesondere von großer Relevanz für zukünftige Anwendungen. In dieser Arbeit wurden die Struktur sowie die Dynamik der Exziton-Polariton-Kondensate in den durch die akustischen Oberflächenwellen erzeugten quadratischen Gittern untersucht. Es wurde dazu die Wellenfunktion der Exziton-Polariton-Kondensate im Rahmen der spektroskopischen und zeitaufgelösten Messungen im Orts- und Impulsraum abgebildet. Die MQZ wurden in einer optisch-parametrischen Oszillatorkonfiguration resonant angeregt. Die spektroskopischen Messungen zeigten, dass Exziton-Polariton-Kondensate in akustischen quadratischen Gittern aus unterschiedlichen MQZ, nämlich aus einem zwei-dimensionalen Gap-Soliton (2D GS) umgeben von mehreren ein-dimensionalen MQZ, und einem inkohärenten Strahlungshintergrund zusammengesetzt sind. Im Rahmen der zeitaufgelösten Experimente wurde die Dynamik der Wellenfunktion des 2D GS untersucht. Die zeitaufgelösten Ergebnisse zeigten, dass sowohl die Intensität der von dem 2D GS emittierten Photolumineszenz (PL) als auch die Kohärenzlänge des 2D GS zeitlich oszillieren. Die Intensität der PL und die Kohärenzlänge hängen von der Anregungsleistung, der Größe des Laserspots sowie von der relativen Position des akustischen Gitters und dem Laserspot ab. Im Ausblick dieser Arbeit wurde theoretisch die Anregung von Tamm-Plasmon/Exziton- Polaritonen (TPEP) sowie deren Modulation mithilfe von akustischen Oberflächenwellen diskutiert. TPEP entstehen durch die Superposition der in der Grenzschicht zwischen Mikrokavität und Metall angeregten Tamm-Plasmonen und den in der Mikrokavität erzeugten Exziton-Polaritonen.
Microcavity (MC) exciton-polaritons can form condensates, i.e. macroscopic quantum states (MQSs), as well under a periodic potential modulation. The modulation by a surface acoustic wave (SAW) provides a powerful tool for the formation of tunable lattices of MQSs in semiconductor MC. In this work, fundamental aspects of the structure and dynamics of exciton-polariton condensate in acoustic square lattices were investigated by probing its wavefunction in real- and momentum space using spectral- and time-resolved studies. The MQSs were resonantly excited in an optical parametric oscillator configuration. The tomographic study revealed that the exciton-polariton condensate structure self-organises in a concentric structure, which consists of a single, two-dimensional gap soliton (2D GS) surrounded by one-dimensional MQSs and an incoherent background. 2D GS size tends to saturate with increasing particle density. The experimental results are supported by a theoretical model based on the variational solution of the Gross-Pitaevskii equation. Time-resolved studies showed the evolution of the 2D GS wavefunction at the acoustic velocity. Interestingly, the photoluminescence (PL) intensity emitted by the 2D GS as well as its coherence length oscillate with time. The PL oscillation amplitude depends on the intensity and the size of the exciting laser spot, and increases considerably for excitation intensities close to the optical threshold power for the formation of the MQS. In the outlook, the formation of Tamm-Plasmon/Exciton-Polariton (TPEP) hybrid states and their modulation by SAWs was theoretically discussed. Here, the upper DBR is partly replaced by a thin metal layer placed on top of the MC. In this case, TPEP form by the superposition of Tamm plasmons at the metal-semiconductor interface and the exciton-polaritons in the MC.
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7

Hamdad, Sarah. "Synthèse et étude de réseaux de nanoparticules métalliques pour l'exaltation de l'électroluminescence des OLEDs via l'effet plasmonique." Thesis, Paris 13, 2021. http://www.theses.fr/2021PA131056.

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Анотація:
Dans ce travail de thèse, nous nous sommes intéressés à l’étude de l’amélioration des propriétés optiques et électriques des OLED en utilisant des réseaux de nanoparticules d’Ag. En particulier, nous nous sommes focalisés sur l’étude des résonances de réseau de surface (SLR) afin de comprendre l’origine des mécanismes d’interactions dans ces réseaux. Nous avons aussi étudié l’influence de ces modes sur les caractéristiques d’émission d’une couche organique d’abord en pompage optique et ensuite en pompage électrique. Pour cela, nous avons mis en place au sein du laboratoire LPL plusieurs bancs optiques et développé des calculs afin d’interpréter les résultats obtenus. Ces résultats confirment le rôle crucial des anomalies de Rayleigh dans l’interaction entre les NPs et les émetteurs organiques. En particulier, ils révèlent leur importance pour l’apparition d’une directivité de l’émission. Dans le cas des μOLED, les études réalisées montrent que la présence de réseaux de courtes périodes améliore le processus électrique d’injection des trous dans le dispositif. De plus, on montre également qu’il est possible d’exalter le rendement de la μOLED par l’insertion d’un réseau de longue périodicité. Toutefois, on souligne que l’existence de modes SLR et les effets de directivité de l’émission dans ces dispositifs nécessitent des études plus approfondies. Les résultats obtenus dans le cadre de cette thèse constituent un pas important vers une profonde compréhension des interactions entre les NPs métalliques et les émetteurs organiques et pourraient ouvrir la voie vers l’étude d’OLED superradiantes qui constituerait une étape intermédiaire pour aller vers la diode laser organique
In this thesis work, we were interested in studying the improvement of the optical and electrical properties of OLEDs using square arrays of Ag nanoparticles. In particular, we focused on the study of surface lattice resonance (SLR) modes in order to understand the interaction mechanisms between the NPs in a grating. We have also studied the influence of these modes on the emission characteristics of an organic layer first under optical pumping and then under electrical pumping. For this, we have set up within the LPL laboratory several optical experiments and developed several numerical calculations in order to interpret the obtained results. These latter confirm the crucial role of Rayleigh anomalies in the appearance of directional emission. In the case of OLEDs, the studies carried out show that the presence of short period metallic structures can help to improve the electrical injection process of holes into the organic device. Besides, we show that the insertion of a longue period grating can improve the efficiency of the OLED. However, the existence of collective SLR modes is not guaranteed in this type of configuration and the emission directivity effects require further studies. The results obtained within the framework of this thesis work constitute an important step towards a deep understanding of the interactions between the grating of metallic NPs and the organic emitters and could open the way towards the study and the realization of superriadiant OLEDs, which would constitute an intermediate step to go to the organic laser diode
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8

Mischok, Andreas, Robert Brückner, Hartmut Fröb, Vadim G. Lyssenko, and Karl Leo. "Photonic lattices in organic microcavities: Bloch states and control of lasing." SPIE, 2015. https://tud.qucosa.de/id/qucosa%3A35053.

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Анотація:
Organic microcavities comprising the host:guest emitter system Alq3:DCM offer an interesting playground to experimentally study the dispersion characteristics of laterally patterned microlasers due to the broad emission spectrum and large oscillator strength of the organic dye. By structuring of metallic or dielectric sublayers directly on top of the bottom mirror, we precisely manipulate the mode structure and in fluence the coherent emission properties of the device. Embedding silver layers into a microcavity leads to an interaction of the optical cavity-state in the organic layer and the neighboring metal which red-shifts the cavity resonance, creating a Tamm-plasmon-polariton state. A patterning of the metal can in turn be exploited to fabricate deep photonic wells of micron-size, efficiently confining light in lateral direction. In periodic arrays of silver wires, we create a Kronig-Penney-like optical potential in the cavity and in turn observe optical Bloch states spanning over several photonic wires. We modify the Kronig-Penney theory to analytically describe the full far-field emission dispersion of our cavities and show the emergence of either zero- , π-, or 2π- phase-locking in the system. By investigating periodic SiO2 patterns, we experimentally observe stimulated emission from the ground and different excited discrete states at room temperature and are able to directly control the laser emission from both extended and confined modes of the photonic wires at room-temperature.
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9

Watt, Morag. "Inelastic light scattering in low dimensional semiconductors." Thesis, University of Glasgow, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364643.

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10

Bellouvet, Maxime. "Condensation de Bose-Einstein et simulation d’une méthode de piégeage d’atomes froids dans des potentiels sublongueur d’onde en champ proche d’une surface nanostructurée." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0265/document.

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Анотація:
Depuis plusieurs décennies un intérêt est né pour combiner deux systèmes quantiques pour former unsystème hybride quantique (SHQ) aux qualités qu’il serait impossible d’atteindre avec un seul des deuxsous-constituants. Parmi les systèmes quantiques, les atomes froids se distinguent par leur fort découplagede l’environnement, permettant un contrôle précis de leurs propriétés intrinsèques. En outre, les simulateursquantiques réalisés en piégeant des atomes froids dans des réseaux optiques présentent des propriétéscontrôlables (échelle d’énergie, géométrie,...) qui permettent d’étudier de nouveaux régimes intéressants enphysique de la matière condensée. Dans cette quête de phases quantiques exotiques (e.g., antiferromagnétisme),la réduction de l’entropie thermique est un défi crucial. Le prix à payer pour atteindre de si faiblestempérature et entropie est un long temps de thermalisation qui limite la réalisation expérimentale. La réductionde la période du réseau est une solution prometteuse pour augmenter la dynamique du système.Les SHQs avec des atomes froids offrent de riches perspectives mais requiert d’interfacer des systèmes quantiquesdans des états différents (solide/gaz) à des distances très proches, ce qui reste un défi expérimental.Le projet AUFRONS, dans lequel s’inscrit cette thèse, vise à refroidir un gaz d’atomes froids jusqu’aurégime de dégénérescence quantique puis de transporter et piéger ce nuage en champ proche d’une nanostructure.L’idée est d’obtenir un gaz d’atomes froids piégé dans un réseau bidimensionnel aux dimensionssublongueur d’onde, à quelques dizaines de nm de la structure. Un des objectifs est d’étudier les interactionsau sein du réseau mais également le couplage des atomes avec les modes de surface.Le travail réalisé durant cette thèse se décompose en une partie expérimentale et une partie théorique.Dans la première nous présentons le refroidissement d’atomes de 87Rb jusqu’au régime de dégénérescencequantique. La seconde partie est consacrée aux simulations théoriques d’une nouvelle méthode que nousavons implémentée pour piéger et manipuler des atomes froids à moins de 100 nm d’une nanostructure.Cette méthode, qui tire profit de la résonance plasmonique et des forces du vide (effet Casimir-Polder),permet de créer des potentiels sublongueur d’onde aux paramètres contrôlables. Nous détaillons ainsi lescalculs des forces optiques et des forces du vide que nous appliquons au cas d’un atome de 87Rb en champproche d’une nanostructure 1D
An interest for hybrid quantum systems (HSQs) has been growing up for the last decades. This object combines two quantum systems in order to take advantage of both systems’ qualities, not available withonly one. Among these quantum systems, ultracold atoms distinguish themselves by their strong decoupling from environment which enables an excellent control of their intrinsic properties. Optical lattice quantum simulators with tunable properties (energy scale, geometry,...) allows one to investigate new regimes incondensed matter physics. In this quest for exotic quantum phases (e.g., antiferromagnetism), the reduction of thermal entropy is a crucial challenge. The price to pay for such low temperature and entropy is a longthermalization time that will ultimately limit the experimental realization. Miniaturization of lattice spacingis a promising solution to speed up the dynamics. Engineering cold atom hybrids offers promising perspectives but requires us to interface quantum systems in different states of matter at very short distances, which still remains an experimental challenge.This thesis is part of the AUFRONS project, which aims at cooling down an atomic gas until the quantum degeneracy regime then transport and trap this cloud in the near field of a nanostructure. The idea is to trapcold atoms in a two-dimensional subwavelength lattice, at a few tenth of nm away from the surface. One goal is to study atom-atom interactions within the lattice but also atom-surface modes coupling.The work realized during this thesis splits into an experimental part and a theoretical part. In the firstone, we present the cooling of 87Rb atoms until the quantum degeneracy regime. The second part is dedicated to theoretical simulations of a new trapping method we have implemented to trap and manipulate cold atoms below 100 nm from structures. This method takes advantage of plasmonic resonance and vacuum forces (Casimir-Polder effect). It allows one to create subwavelength potentials with controllable parameters.We detail the calculations of optical and vacuum forces to apply them to an atom of 87Rb in the vicinity of a 1D nanostructure
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Книги з теми "Plasmonic lattice"

1

V, Guryev Igor, ed. Photonic crystals: Physics and practical modeling. Heidelberg: Springer, 2009.

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2

Controlling Light In Optically Induced Photonic Lattices. Springer, 2011.

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3

Terhalle, Bernd. Controlling Light in Optically Induced Photonic Lattices. Springer, 2013.

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4

Terhalle, Bernd. Controlling Light in Optically Induced Photonic Lattices. Springer, 2011.

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5

Terhalle, Bernd. Controlling Light in Optically Induced Photonic Lattices. Springer, 2011.

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6

Horing, Norman J. Morgenstern. Interacting Electron–Hole–Phonon System. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198791942.003.0011.

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Chapter 11 employs variational differential techniques and the Schwinger Action Principle to derive coupled-field Green’s function equations for a multi-component system, modeled as an interacting electron-hole-phonon system. The coupled Fermion Green’s function equations involve five interactions (electron-electron, hole-hole, electron-hole, electron-phonon, and hole-phonon). Starting with quantum Hamilton equations of motion for the various electron/hole creation/annihilation operators and their nonequilibrium average/expectation values, variational differentiation with respect to particle sources leads to a chain of coupled Green’s function equations involving differing species of Green’s functions. For example, the 1-electron Green’s function equation is coupled to the 2-electron Green’s function (as earlier), also to the 1-electron/1-hole Green’s function, and to the Green’s function for 1-electron propagation influenced by a nontrivial phonon field. Similar remarks apply to the 1-hole Green’s function equation, and all others. Higher order Green’s function equations are derived by further variational differentiation with respect to sources, yielding additional couplings. Chapter 11 also introduces the 1-phonon Green’s function, emphasizing the role of electron coupling in phonon propagation, leading to dynamic, nonlocal electron screening of the phonon spectrum and hybridization of the ion and electron plasmons, a Bohm-Staver phonon mode, and the Kohn anomaly. Furthermore, the single-electron Green’s function with only phonon coupling can be rewritten, as usual, coupled to the 2-electron Green’s function with an effective time-dependent electron-electron interaction potential mediated by the 1-phonon Green’s function, leading to the polaron as an electron propagating jointly with its induced lattice polarization. An alternative formulation of the coupled Green’s function equations for the electron-hole-phonon model is applied in the development of a generalized shielded potential approximation, analysing its inverse dielectric screening response function and associated hybridized collective modes. A brief discussion of the (theoretical) origin of the exciton-plasmon interaction follows.
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7

Sukhoivanov, Igor A., and Igor V. Guryev. Photonic Crystals: Physics and Practical Modeling. Springer, 2014.

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8

Nonlinearities In Periodic Structures And Metamaterials. Springer, 2009.

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9

Kivshar, Yuri S., Cornelia Denz, and Sergej Flach. Nonlinearities in Periodic Structures and Metamaterials. Springer London, Limited, 2010.

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10

Kivshar, Yuri S., Cornelia Denz, and Sergej Flach. Nonlinearities in Periodic Structures and Metamaterials. Springer, 2012.

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Частини книг з теми "Plasmonic lattice"

1

Hase, Muneaki, Kunie Ishioka, Masahiro Kitajima, and Kiminori Ushida. "Effect of lattice defects on LO phonon-plasmon coupled modes in n-GaAs." In Ultrafast Phenomena XII, 387–89. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56546-5_113.

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2

Hase, Muneaki, Kunie Ishioka, Kiminori Ushida, and Masahiro Kitajima. "Annihilation of coherent LO phonon-plasmon coupled modes by lattice defects in n-GaAs." In Springer Proceedings in Physics, 186–87. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-59484-7_81.

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3

Shakya, Amit Kumar, and Surinder Singh. "Gold-ZnO Coated Surface Plasmon Resonance Refractive Index Sensor Based on Photonic Crystal Fiber with Tetra Core in Hexagonal Lattice of Elliptical Air Holes." In Lecture Notes in Electrical Engineering, 567–76. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0236-1_43.

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4

Qian, Wei, Wenyu Huang, Qusai Darugar, and Mostafa A. El-Sayed. "Ultrafast electronic and lattice processes of plasmonic nanoparticles of different shape." In Femtochemistry VII, 260–73. Elsevier, 2006. http://dx.doi.org/10.1016/b978-044452821-6/50039-3.

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5

Katti, Aavishkar, and Priya Singh. "Gap Solitons in Photorefractive Optical Lattices." In Photonics, Plasmonics and Information Optics, 267–88. CRC Press, 2021. http://dx.doi.org/10.1201/9781003047193-10.

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6

Mills, D. L. "THE COLLECTIVE EXCITATIONS OF SEMICONDUCTING FILMS; OPTICAL PHONONS AND PLASMONS." In Lattice Dynamics and Semiconductor Physics, 590–606. WORLD SCIENTIFIC, 1989. http://dx.doi.org/10.1142/9789814368346_0033.

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Тези доповідей конференцій з теми "Plasmonic lattice"

1

Boddeti, Ashwin K., Jun Guan, Tyler Sentz, Xitali Juarez, Ward Newman, Cristian Cortes, Teri W. Odom, and Zubin Jacob. "Long-range dipole-dipole interactions in a plasmonic lattice." In CLEO: QELS_Fundamental Science. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_qels.2022.ff4d.1.

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We observe long-range dipole-dipole interactions in a plasmonic lattice mediated by collective plasmonic lattice modes. Fluorescence lifetime measurements show density-dependent non-exponential decay dynamics that commensurate to over 800 nm mean nearest-neighbor separation between interacting emitters.
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2

Saad-Bin-Alam, Md, M. Zahirul Alam, Ksenia Dolgaleva, and Robert W. Boyd. "Multi-diffraction-order plasmonic lattice resonances." In 2022 Photonics North (PN). IEEE, 2022. http://dx.doi.org/10.1109/pn56061.2022.9908373.

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3

Ming-Wei Tsai, Tzu-Hung Chuang, Yi-Tsung Chang, and Si-Chen Lee. "Two Color Squared-lattice Plasmonic Thermal Emitter." In 2006 Sixth IEEE Conference on Nanotechnology. IEEE, 2006. http://dx.doi.org/10.1109/nano.2006.247763.

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4

Swami, O. P., Vijendra Kumar, and A. K. Nagar. "Plasmonic lattice solitons in metallic nanowire materials." In INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2015): Proceeding of International Conference on Condensed Matter and Applied Physics. Author(s), 2016. http://dx.doi.org/10.1063/1.4946498.

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5

Huang, Zhen-Ting, Chih-Wei Yin, Heng Li, Kuo-Bin Hong, and Tien-Chang Lu. "Hybridized plasmonic surface lattice resonance perovskite laser." In 2021 26th Microoptics Conference (MOC). IEEE, 2021. http://dx.doi.org/10.23919/moc52031.2021.9598111.

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6

Saad Bin-Alam, M., M. Zahirul Alam, Ksenia Dolgaleva, and Robert W. Boyd. "Ultra-High-Q Multi-Resonant Metasurface using Plasmonic Lattice in Inhomogeneous Medium." In CLEO: QELS_Fundamental Science. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_qels.2022.fth2b.1.

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We demonstrate excitation of guided lattice resonances inside a semiconductor thin-film in a inhomogeneous metasurface enabled by a lossy plasmonic lattice reso-nanances with a record Q-factor value over 10,000.
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7

Saito, Hikaru, and Naoki Yamamoto. "Cathodoluminescence of 2D plasmonic crystals with hexagonal lattice." In JSAP-OSA Joint Symposia. Washington, D.C.: OSA, 2014. http://dx.doi.org/10.1364/jsap.2014.19p_c3_10.

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8

Stolt, Timo, Jussi Kelavuori, Viatcheslav Vanyukov, Heikki Rekola, Jarno Reuna, Tommi K. Hakala, and Mikko J. Huttunen. "Temperature-tunable Surface Lattice Resonances in Plasmonic Metasurfaces." In 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, 2021. http://dx.doi.org/10.1109/cleo/europe-eqec52157.2021.9542591.

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9

Reshef, Orad, Md Saad-Bin-Alam, N. Apurv Chaitanya, Timo Stolt, Ryan Hogan, Mohammad Karimi, M. Zahirul Alam, et al. "Nonlinear plasmonic metasurfaces using multiresonant surface lattice resonances." In CLEO: Applications and Technology. Washington, D.C.: OSA, 2020. http://dx.doi.org/10.1364/cleo_at.2020.jm1g.5.

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10

Michaeli, Lior, Haim Suchowski, and Tal Ellenbogen. "Tunable Transparency and Slow Light in Plasmonic Lattice." In CLEO: Applications and Technology. Washington, D.C.: OSA, 2020. http://dx.doi.org/10.1364/cleo_at.2020.jtu2d.9.

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Звіти організацій з теми "Plasmonic lattice"

1

Pletzer, A., and G. Shvets. Simulating Photons and Plasmons in a Three-dimensional Lattice. Office of Scientific and Technical Information (OSTI), September 2002. http://dx.doi.org/10.2172/809824.

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