Strong Coupling between Nanoscale Metamaterials and Phonons

Shelton, David; Brener, Igal; Ginn, James; Sinclair, Michael B.; Peters, David W.; Coffey, Kevin R.; Boreman, Glenn D.

doi:10.1021/nl200689z

Cited by 121 publications

(98 citation statements)

References 27 publications

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“…24,25 In our case, the in-plane electric field couples efficiently to the TEpolarized cyclotron transition when the magnetic field is applied perpendicularly to the plane of the layers and parallel to the wavevector of the incident THz pulse (see Figs. 1(b) and 1(c)).…”

Section: Samples and Resonators Employedmentioning

confidence: 88%

Ultrastrong light-matter coupling at terahertz frequencies with split ring resonators and inter-Landau level transitions

Scalari

Maissen

Hagenmüller

et al. 2013

Journal of Applied Physics

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Articles you may be interested inTerahertz response of fractal meta-atoms based on concentric rectangular square resonators J. Appl. Phys. 118, 193103 (2015) We study strong light-matter coupling at terahertz frequencies employing a system based on an array of deeply subwavelength split ring resonators deposited on top of an ensemble of modulation-doped quantum wells. By applying a magnetic field parallel to the epitaxial growth axis, at low temperatures, Landau Levels are formed. We probe the interaction of the inter-Landau level transitions with the resonators modes, measuring a normalized coupling ratio¼ 0:58 between the inter-Landau level frequency x c and the Rabi frequency X of the system. The physics of the system is studied as a function of the metasurface composition and of the number of quantum wells. We demonstrate that the light-matter coupling strength is basically independent from the metamaterial lattice spacing. V C 2013 American Institute of Physics. [http://dx

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Section: Samples and Resonators Employedmentioning

confidence: 88%

Ultrastrong light-matter coupling at terahertz frequencies with split ring resonators and inter-Landau level transitions

Scalari

Maissen

Hagenmüller

et al. 2013

Journal of Applied Physics

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“…Advantages of MMs are simple fabrication, large area coverage, full control over the resonance parameters (linewidth, amplitude, and resonance frequency), and straightforward coupling to free space electromagnetic waves. This has led to the demonstration of light-matter coupling with a number of quantum systems including phonons, 12 intersubband transitions (ISBTs) in quantum wells (QWs), 13,14 vibrational modes of molecules, 15 and cyclotron resonances. 16,17 The coupling of MMs to ISBTs in QWs is especially appealing for applications due to the tunability of the transition frequency, the large dipole moment, and the possibility of optical and/or electrical modulation.…”

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confidence: 99%

Ultrastrong coupling of intersubband plasmons and terahertz metamaterials

Dietze

Andrews

Klang

et al. 2013

Applied Physics Letters

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We report on the ultrastrong-coupling between localized plasmons of a planar terahertz metamaterial and intersubband plasmons in a modulation doped quantum well sample. Such a system exhibits the formation of a lower and an upper polariton branch when the metamaterial eigenfrequency is tuned close to resonance with the intersubband transition. We achieve a normalized polariton splitting of 22% and a polaritonic gap of 2.4% of the intersubband transition frequency. In addition to the usual geometrical scaling, we demonstrate the effective tuning of the metamaterial resonance by dry etching with a tuning range of more than 1 THz.

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“…The reason for this behavior might be the different coupling of the phonon to the plasmon mode. Shelton et al [112] used differently sized split ring resonators to tune the plasmon resonance from 6.6 μm to 13.8 μm and showed that there exists a strong coupling between both modes, which could be well explained by a coupled oscillator model. This model predicts a repulsion of both modes and an energy gap explaining the transparency window between them.…”

Section: Rings Split Rings Crescents and Dolmen-type Structuresmentioning

confidence: 99%

Periodic array-based substrates for surface-enhanced infrared spectroscopy

Mayerhöfer

Popp

2017

Nanophotonics

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At the beginning of the 1980s, the first reports of surface-enhanced infrared spectroscopy (SEIRS) surfaced. Probably due to signal-enhancement factors of only 10 1 to 10 3 , which are modest compared to those of surface-enhanced Raman spectroscopy (SERS), SEIRS did not reach the same significance up to date. However, taking the compared to Raman scattering much larger crosssections of infrared absorptions and the enhancement factors together, SEIRS reaches about the same sensitivity for molecular species on a surface in terms of the crosssections as SERS and, due to the complementary nature of both techniques, can valuably augment information gained by SERS. For the first 20 years since its discovery, SEIRS relied completely on metal island films, fabricated by either vapor or electrochemical deposition. The resulting films showed a strong variance concerning their structure, which was essentially random. Therefore, the increase in the corresponding signal-enhancement factors of these structures stagnated in the last years. In the very same years, however, the development of periodic array-based substrates helped SEIRS to gather momentum. This development was supported by technological progress concerning electromagnetic field solvers, which help to understand plasmonic properties and allow targeted design. In addition, the strong progress concerning modern fabrication methods allowed to implement these designs into practice. The aim of this contribution is to critically review the development of these engineered surfaces for SEIRS, to compare the different approaches with regard to their performance where possible, and report further gain of knowledge around and in relation to these structures.

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Strong Coupling between Nanoscale Metamaterials and Phonons

Cited by 121 publications

References 27 publications

Ultrastrong light-matter coupling at terahertz frequencies with split ring resonators and inter-Landau level transitions

Ultrastrong light-matter coupling at terahertz frequencies with split ring resonators and inter-Landau level transitions

Ultrastrong coupling of intersubband plasmons and terahertz metamaterials

Periodic array-based substrates for surface-enhanced infrared spectroscopy

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