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Nano-apertures and applications I

10:30 Invited talk : Single photon transport by atom through nanohole

Anton Afanasiev, Pavel Melentiev, Artur Kuzin, Alexandr Kalatskiy, Victor Balykin

Russian Academy of Sciences (Russia)

We have investigated a single photon transport by atom through nanohole. A single Rb atom absorbs a photon of laser radiation before nanohole, passes the photon through nanohole and then emits it after nanohole by way of spontaneous decay. Our measurements showed a high transfer efficiency 1 percent of single photon transport through nanohole for nanoholes of 400 nm diameter.
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10:50 Invited talk : Nano-optical spectroscopic imaging of monolayer MoS2

Wei Bao (1),Nicholas Borys (1),Changhyun Ko (2),Sefaattin Tongay (2),Wen Fan (2),D. Ogletree (1),Paul Ashby (1),Miquel Salmeron (1),Junqiao Wu (2),P. James Schuck (1)

(1)Lawrence Berkeley National Laboratory (USA) , (2)U. C. Berkeley (USA)

We describe the first nano-optical investigation of 2D transition metal dichalcogenides (TMDCs). Establishing a solution to the nanospectroscopy imaging problem for these materials, we cross the boundary from insufficient to sufficient resolution, mapping critical optoelectronic properties at their native length scales. In doing so, we uncover new optoelectronic regions and spatially-varying features in MoS2 that were hidden in prior optical studies.
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11:10 Invited talk : Nanopore Plasmonic Sensing

C. Crick, P. Albella, B. Ng, A. Ivanov, T. Roschuk, M. P. Cecchini, F. Bresme, S. Maier, Joshua Edel

Imperial College London (United Kingdom)

The work presented within details precise temperature control at a plasmonic nanopore. The solid-state devices are made up of a silicon nitride membrane, and gold layer patterned with a well-defined bullseye structure surrounding a nanopore. The design is optimised, through simulation and experiment, to act as nanoantenna with maximum enhancement at the centre of the pore.
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11:30 Invited talk : Elliptical gold nanohole as optical trap for plasmon-enhanced chiral analysis

Zhan-Hong Lin, Jer-Shing Huang

National Tsing Hua University (Taiwan)

We present a simple design of plasmonic optical trap that enables simultaneous enhanced trapping and chiral analysis. By making the nanoholes elliptical, we introduce 90 degree phase shift between the orthogonal field components. The holes then serve as a nanosized quarter wave plate upon excitation of linearly polarized light. The enhanced circularly polarized near field simultaneously enhance the chiroptical response and trap the targets in the active zone. Our design might find applications in chiral analysis of single proteins.
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11:50 Invited talk : Giant Optical Nonlinearity of a Single Nanohole: from Intense Harmonics Generation to a Broadband Photoluminescence

Pavel Melentiev (1),Anton Afanasiev (1),Artur Kuzin (1),Alex Zablotskiy (1),Victor Balykin (2)

(1)Russian Academy of Sciences (Russia) , (2)Moscow Institute of Physics and Technology (Russia)

We present results of experimental research of a strong nonlinearity of a single plasmonic nanohole: (1) generation of harmonics in UV and visible spectral ranges, (2) multi-photon induced luminescence, (3) the practical application of the giant optical nonlinearity of plasmonic nanoholes to implement (i) all-optical display , (ii) nanolocalized and femtosecond laser sources , (iii) optical nanoscale multi-order auto correlator.
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12:10 Invited talk : Metasurfaces for advanced plasmonic functionalities: fabrication, fundamentals and applications

Ruggero Verre, Mikael Svedendahl, Kunli Xiong, Andreas B. Dahlin, Tomasz Antosiewicz, Timur Shegai, Mikael Kall

Chalmers University of Technology (Sweden)

We report on recent advances in the area in terms of nanofabrication, characterization and applications, with particular emphasis on refractometric based sensing.
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