Linear and nonlinear phenomena with resonating surface polariton waves and their applications

Grebel, Haim

doi:10.1017/cbo9780511921261.012

Cited by 4 publications

(4 citation statements)

References 58 publications

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“…Note that the array pitch is much smaller than the propagating wavelength and a bound surface mode is utilizing every other or even larger number of hole-planes. The tilt angle θ may be computed similarly to [12] as, …”

Section: Resultsmentioning

confidence: 99%

Graphene Channels Interfaced with Quantum Dots in Field Effect Transistors: Electrical and Photo-Induced Effects

2016

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Graphene-based field effect transistors (GFETs) were assessed when interfaced with well separated and precisely placed core/shell CdSe/ZnS semiconductor quantum dot (QD) arrays. The QDs were imbedded in a hexagonal hole-array, which was formed in a layer of anodized aluminum oxide on Si/SiO 2 substrates. Graphene (single, or two layers), grown by chemical vapor deposition (CVD) on Cu foils, was transferred and placed on top of the QDs imbedded films and served as the transistor channel. Electrical characteristics under white-light illumination at various biasing conditions revealed that the photo current was decreasing upon increasing biasing. The device's photoluminescence (PL) as a function of both the drain-source and gate-source potentials also reduced as a function of the potential biases. We observed two maxima in the PL data while tilting the sample with respect to the incident laser beam. We attributed it to the optimal coupling between the incident and the emission wavelengths to resonating surface modes.

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Section: Resultsmentioning

confidence: 99%

Graphene Channels Interfaced with Quantum Dots in Field Effect Transistors: Electrical and Photo-Induced Effects

2016

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“…For graphene, 1/(1600 cm -1 )=6.25 m and 28.6 o . Standing surface waves are invoked by the same periodic structure, yet not necessarily along the same direction, thus forming resonance conditions [6].…”

Section: Discussion and Analysismentioning

confidence: 99%

“…Applications at sub THz/infrared frequency range [3][4], and the combination of graphene with resonating meta-structures at near IR wavelengths (1600 nm) [5] have been introduced, as well. It has also been known that when interfaced with resonating periodic metallic structures, graphene enables better linear and nonlinear interaction with molecules at its surface [6]. Here we address the nonlinear interaction between surface plasmon polariton (SPP) waves in mid-IR ( in the range of 6 to 10 m), that are propagating in suspended graphene waveguides, and local vibrating molecules, situated at the waveguide surface (Fig.…”

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confidence: 99%

Nonlinear behavior of vibrating molecules on suspended graphene waveguides

Banerjee

Grebel

2013

Opt. Lett.

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Abstract:Suspended graphene waveguides were deposited on micron-scale periodic metal (plasmonic) structures. Raman scattering of test molecules (B. Megaterium), deposited on the waveguides' surface, exhibited azimuthal cycles upon rotation: at these micron scales, spontaneous Raman ought to be independent of phase matching conditions. In addition, we observed angularselective quadratic intensity dependence contrary to the typical linear behavior of spontaneous Raman. The effects were observed at very modest pump laser intensities (<10 MW/cm 2 at the sample surface, oftenly used in Raman experiments). We attributed these observations to nonlinear coupling between the vibrating molecules and surface plasmon polariton (SPP) modes at the molecular vibration frequency. It was assessed that the polariton mode propagates through fairly long distances (over 100 microns).

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“…The tilt angle θ that produces maximum coupling between the surface and radiation modes may be computed similarly to [21] as,…”

Section: Surface Modesmentioning

confidence: 99%

Lifetime and linewidth of individual quantum dots interfaced with graphene

et al. 2018

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We report on luminescence lifetimes and linewidths from an array of individual quantum dots (QDs) that were either interfaced with graphene surface guides or dispersed on aluminum electrodes. The observed fluorescence quenching is consistent with screening by charge carriers. Fluorescence quenching is typically mentioned as a sign that chromophores are interfacing with a conductive surface (metal or graphene); we find that the QDs interfaced with the metal film exhibit shortened lifetime and line-broadening but not necessarily fluorescence quenching as the latter may be impacted by molecular concentration, reflectivity and conductor imperfections. We also comment on angle-dependent lifetime measurements, which we postulate depend on the specifics of the local density-of-states involved.

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Linear and nonlinear phenomena with resonating surface polariton waves and their applications

Cited by 4 publications

References 58 publications

Graphene Channels Interfaced with Quantum Dots in Field Effect Transistors: Electrical and Photo-Induced Effects

Graphene Channels Interfaced with Quantum Dots in Field Effect Transistors: Electrical and Photo-Induced Effects

Nonlinear behavior of vibrating molecules on suspended graphene waveguides

Lifetime and linewidth of individual quantum dots interfaced with graphene

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