265 results found
Baek IH, Hamm JM, Ahn KJ, et al., 2017, Boosting the terahertz nonlinearity of graphene by orientation disorder, 2D MATERIALS, Vol: 4, ISSN: 2053-1583
Bello F, Page AF, Pusch A, et al., 2017, Combining epsilon-Near-Zero Behavior and Stopped Light Energy Bands for Ultra-Low Reflection and Reduced Dispersion of Slow Light, SCIENTIFIC REPORTS, Vol: 7, ISSN: 2045-2322
Chikkaraddy R, Turek VA, Kongsuwan N, et al., 2017, Mapping Nanoscale Hotspots with Single-Molecule Emitters Assembled into Plasmonic Nanocavities Using DNA Origami., Nano Lett
Fabricating nanocavities in which optically active single quantum emitters are precisely positioned is crucial for building nanophotonic devices. Here we show that self-assembly based on robust DNA-origami constructs can precisely position single molecules laterally within sub-5 nm gaps between plasmonic substrates that support intense optical confinement. By placing single-molecules at the center of a nanocavity, we show modification of the plasmon cavity resonance before and after bleaching the chromophore and obtain enhancements of ≥4 × 103 with high quantum yield (≥50%). By varying the lateral position of the molecule in the gap, we directly map the spatial profile of the local density of optical states with a resolution of ±1.5 nm. Our approach introduces a straightforward noninvasive way to measure and quantify confined optical modes on the nanoscale.
Choi HJ, Baek IH, Kang BJ, et al., 2017, Control of terahertz nonlinear transmission with electrically gated graphene metadevices, SCIENTIFIC REPORTS, Vol: 7, ISSN: 2045-2322
Demetriadou A, Hamm JM, Luo Y, et al., 2017, Spatiotemporal Dynamics and Control of Strong Coupling in Plasmonic Nanocavities, ACS PHOTONICS, Vol: 4, Pages: 2410-2418, ISSN: 2330-4022
Gric, Hess O, 2017, Surface waves supported by the nanostructured semiconductor metamaterials, Journal of Electromagnetic Waves and Applications, ISSN: 0920-5071
We discover a new kind of surface wave on semiconductor nanostructured metamaterial, which crosses the light line with a substantial portion at lower frequencies lying above the free space light line. Interestingly, the propagation of such surface wave is found to be sensitive to the parameters of the semiconductor. Furthermore, the Ferrel-Berreman modes are observed under the certain conditions, opening a gateway toward device fabrications.
Gric T, Hess O, 2017, Tunable surface waves at the interface separating different graphene-dielectric composite hyperbolic metamaterials, OPTICS EXPRESS, Vol: 25, Pages: 11466-11476, ISSN: 1094-4087
Gric T, Hess O, 2017, Surface plasmon polaritons at the interface of two nanowire metamaterials, JOURNAL OF OPTICS, Vol: 19, ISSN: 2040-8978
Kerber RM, Fitzgerald JM, Reiter DE, et al., 2017, Reading the Orbital Angular Momentum of Light Using Plasmonic Nanoantennas, ACS PHOTONICS, Vol: 4, Pages: 891-896, ISSN: 2330-4022
Kim T-T, Oh SS, Kim H-D, et al., 2017, Electrical access to critical coupling of circularly polarized waves in graphene chiral metamaterials., Sci Adv, Vol: 3
Active control of polarization states of electromagnetic waves is highly desirable because of its diverse applications in information processing, telecommunications, and spectroscopy. However, despite the recent advances using artificial materials, most active polarization control schemes require optical stimuli necessitating complex optical setups. We experimentally demonstrate an alternative-direct electrical tuning of the polarization state of terahertz waves. Combining a chiral metamaterial with a gated single-layer sheet of graphene, we show that transmission of a terahertz wave with one circular polarization can be electrically controlled without affecting that of the other circular polarization, leading to large-intensity modulation depths (>99%) with a low gate voltage. This effective control of polarization is made possible by the full accessibility of three coupling regimes, that is, underdamped, critically damped, and overdamped regimes by electrical control of the graphene properties.
Kongsuwan N, Demetriadou A, Chikkaraddy R, et al., 2017, Suppressed Quenching and Strong-Coupling of Purcell-Enhanced Single-Molecule Emission in Plasmonic Nanocavities, ACS Photonics, ISSN: 2330-4022
Ren G, Yudistira D, Nguyen TG, et al., 2017, Experimental demonstration of two-dimensional hybrid waveguide-integrated plasmonic crystals on silicon-on-insulator platform, APL PHOTONICS, Vol: 2, ISSN: 2378-0967
Saba MS, Hamm JM, Baumberg JJ, et al., 2017, Group Theoretical Route to Deterministic Weyl Points in Chiral Photonic Lattices, Physical Review Letters, Vol: 119, ISSN: 0031-9007
Topological phases derived from point degeneracies in photonic bandstructures show intriguing and unique behaviour. Previously identified band degeneracies are based on accidental degeneracies and subject to engineering on a case-by-case basis. Here we show that deterministic pseudo Weyl points with non-trivial topology and hyper-conic dispersion exist at the Brillouin zone center of chiral cubic symmetries. This conceivably allows realization of topologically protected frequencyisolated surface bands in 3D and n = 0 properties as demonstrated for a nano plasmonic system and a photonic crystal.
Chikkaraddy R, de Nijs B, Benz F, et al., 2016, Single-molecule strong coupling at room temperature in plasmonic nanocavities, NATURE, Vol: 535, Pages: 127-130, ISSN: 0028-0836
Curtin OJ, Yoshida M, Pusch A, et al., 2016, Quantum Cascade Photon Ratchets for Intermediate-Band Solar Cells, IEEE JOURNAL OF PHOTOVOLTAICS, Vol: 6, Pages: 673-678, ISSN: 2156-3381
Dolan JA, Saba M, Dehmel R, et al., 2016, Gyroid Optical Metamaterials: Calculating the Effective Permittivity of Multidomain Samples, ACS PHOTONICS, Vol: 3, Pages: 1888-1896, ISSN: 2330-4022
Guazzotti S, Pusch A, Reiter DE, et al., 2016, Dynamical calculation of third-harmonic generation in a semiconductor quantum well, PHYSICAL REVIEW B, Vol: 94, ISSN: 2469-9950
Hamm JM, Page AF, Bravo-Abad J, et al., 2016, Nonequilibrium plasmon emission drives ultrafast carrier relaxation dynamics in photoexcited graphene, PHYSICAL REVIEW B, Vol: 93, ISSN: 1098-0121
Hylton NP, Hinrichsen TF, Vaquero-Stainer AR, et al., 2016, Photoluminescence upconversion at GaAs/InGaP2 interfaces driven by a sequential two-photon absorption mechanism, PHYSICAL REVIEW B, Vol: 93, ISSN: 2469-9950
Mertens J, Demetriadou A, Bowman RW, et al., 2016, Tracking Optical Welding through Groove Modes in Plasmonic Nanocavities, NANO LETTERS, Vol: 16, Pages: 5605-5611, ISSN: 1530-6984
Oh SS, Wood JJ, Kim SH, et al., 2016, Localized toroidal dipole moment of spoof surface plasmon polaritons
© 2015 IEEE. At infrared wavelengths, we demonstrate subwavelength scale localization of spoof surface plasmon polaritons. Based on an analytical model and numerical simulations, we show that the defect mode has toroidal dipole moment and high Q factor.
Pusch A, Yoshida M, Hylton NP, et al., 2016, Limiting efficiencies for intermediate band solar cells with partial absorptivity: the case for a quantum ratchet, PROGRESS IN PHOTOVOLTAICS, Vol: 24, Pages: 656-662, ISSN: 1062-7995
Pusch A, Yoshida M, Hylton NP, et al., 2016, The Purpose of a Photon Ratchet in Intermediate Band Solar Cells, 43rd IEEE Photovoltaic Specialists Conference (PVSC), Publisher: IEEE, Pages: 9-12, ISSN: 0160-8371
Sidiropoulos TPH, Roeder R, Geburt S, et al., 2016, Ultrafast ZnO nanowire lasers: nanoplasmonic acceleration of gain dynamics at the surface plasmon polariton frequency, Conference on Lasers and Electro-Optics (CLEO), Publisher: IEEE, ISSN: 2160-9020
Baumberg J, Noginov M, Aizpurua J, et al., 2015, Quantum plasmonics, gain and spasers: general discussion, Faraday Discuss., Vol: 178, Pages: 325-334, ISSN: 1359-6640
Hess O, 2015, Cavity-free stopped-light nanolasing in nanoplasmonic heterostructures, Conference on Active Photonic Materials VII, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X
Ibbotson LA, Demetriadou A, Croxall S, et al., 2015, Optical nano-woodpiles: large-area metallic photonic crystals and metamaterials, SCIENTIFIC REPORTS, Vol: 5, ISSN: 2045-2322
This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.