Molecular fluorescence above metallic gratings

Andrew, Piers; Barnes, William

doi:10.1103/physrevb.64.125405

Cited by 64 publications

(56 citation statements)

References 39 publications

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“…By simulating and optically imaging this flow of light, new intuition is gained about the operation of optical antennas as compared with traditional far-field measurements of the angular distribution of the emission intensity. Our work also builds and expands on previous studies based on the use of metal gratings (without a central slit) to direct emission from quantum emitters [14][15][16] . Finally, the proposed antenna architecture allows for electrical manipulation of QD emission.…”

mentioning

confidence: 56%

Plasmonic beaming and active control over fluorescent emission

Jun

Huang²,

Brongersma³

2011

Nat Commun

194

185

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nanometallic optical antennas are rapidly gaining popularity in applications that require exquisite control over light concentration and emission processes. The search is on for highperformance antennas that offer facile integration on chips. Here we demonstrate a new, easily fabricated optical antenna design that achieves an unprecedented level of control over fluorescent emission by combining concepts from plasmonics, radiative decay engineering and optical beaming. The antenna consists of a nanoscale plasmonic cavity filled with quantum dots coupled to a miniature grating structure that can be engineered to produce one or more highly collimated beams. Electromagnetic simulations and confocal microscopy were used to visualize the beaming process. The metals defining the plasmonic cavity can be utilized to electrically control the emission intensity and wavelength. These findings facilitate the realization of a new class of active optical antennas for use in new optical sources and a wide range of nanoscale optical spectroscopy applications.

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mentioning

confidence: 56%

Plasmonic beaming and active control over fluorescent emission

Jun

Huang²,

Brongersma³

2011

Nat Commun

194

185

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show abstract

“…Considerable advances made in nanotechnology in recent years and the desire to control and manipulate light at nanoscale have renewed the interest in surface plasmons 2 . Numerical simulations and experiments have demonstrated unique properties of different plasmonic nanostructure such as extraordinary transmission 3,4 , guiding 5,6,7,8 , fluorescence enhancement 9,10,11,12,13 , field enhancement 14,15,16 , focussing 17 , superresolution 20,21,22 , omnidirectional absorption 23,25 , coherent thermal emission 24,25,26 . In this paper, we shall focus on surface plasmons propagating along flat surfaces.…”

Section: Introductionmentioning

confidence: 99%

Surface plasmon Fourier optics

et al. 2009

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Surface plasmons are usually described as surface waves with either a complex wavevector or a complex frequency. When discussing their merits in terms of field confinment or enhancement of the local density of states, controversies regularly arise as the results depend on the choice of a complex wavevector or a complex frequency. In particular, the shape of the dispersion curves depends on this choice. When discussing diffraction of surface plasmon a scalar approximation is often used. In this work, we derive two equivalent vectorial representations of a surface plasmon field using an expansion over surface waves with either a complex wavevector or a complex frequency. These representations can be used to account for propagation and diffraction of surface waves. They can also be used to discuss the issue of field confinment and local density of states as they have a non-ambiguous relation with the two dispersion relations.

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“…Both the properties of molecules and those of the SPPs can be strongly affected by each other. For instance, molecular fluorescence is modified by proximity to a metal surface [11][12][13] and the surface plasmonpolariton dispersion curves of flat metallic films are changed by the presence of molecular absorption transitions. 14,15 For those reasons, we have studied in detail the interaction of dye molecules with the SPPs of subwavelength hole arrays.…”

Section: Introductionmentioning

confidence: 99%

Strong coupling between surface plasmon-polaritons and organic molecules in subwavelength hole arrays

et al. 2005

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The interaction of a J-aggregate and surface plasmon polariton modes of a subwavelength hole array have been studied in detail. By measuring the effects of hole array period, angular dispersion and concentration of the J-aggregate on the transmission of the array, the existence of a strong coupling regime is demonstrated with a Rabi splitting of 250 meV. This large splitting is explained not only by the high oscillator strength of the dye but also by the high local field amplitudes generated by surface plasmons of the metallic structure.

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Molecular fluorescence above metallic gratings

Cited by 64 publications

References 39 publications

Plasmonic beaming and active control over fluorescent emission

Plasmonic beaming and active control over fluorescent emission

Surface plasmon Fourier optics

Strong coupling between surface plasmon-polaritons and organic molecules in subwavelength hole arrays

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