Conference Agenda

Topical Meetings and Sessions:

TOM 1 - Silicon Photonics and Guided-Wave Optics
TOM 2 - Computational, Adaptive and Freeform Optics
TOM 3 - Optical System Design, Tolerancing and Manufacturing
TOM 4 - Bio-Medical Optics
TOM 5 - Resonant Nanophotonics
TOM 6 - Optical Materials: crystals, thin films, organic molecules and polymers, syntheses, characterization and devices
TOM 7 - Thermal radiation and energy management
TOM 8 - Nonlinear and Quantum Optics
TOM 9 - Optics at Nanoscale (ONS)
TOM 10 - Optical Microsystems (OMS)
TOM 11 - Waves in Complex Photonic Media
TOM 12 - Optofluidics
TOM 13 - Ultrafast Optical Technologies and Applications
TOM 14 - Advances and Applications of Optics and Photonics
EU Project Session
Early Stage Researcher Session organised by SIOF
Grand Challenges of Photonics Session

More information on the Topical Meetings

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Session Overview
Session
TOM9 S04: Optics at Nanoscale (ONS): Chiral structures
Time:
Tuesday, 14/Sept/2021:
18:00 - 19:30

Session Chair: Alessandro Belardini, Sapienza Università di Roma, Italy
Location: Aula 8

1st Floor

Presentations
18:00 - 18:15
ID: 303 / TOM9 S04: 1
TOM 9 Optics at Nanoscale (ONS)

Spatially coherent helical and non-helical nano-heterostructures with tunable plasmonic response

Ufuk Kilic1, Matthew Hilfiker1, Alexander Ruder1, Rafal Korlacki1, Rene Feder2, Frank Frost3, Mathias Schubert1, Christos Argyropoulos1, Eva Schubert1,3

1University of Nebraska-Lincoln, Department for Electrical and Computer Engineering and Nebraska Center for Materials and Nanoscience, 418 East Nebraska Hall, 68588 Lincoln, Nebraska, U.S.A.; 2Fraunhofer Institute for Microstructure of Materials and Systems, Walter-Hülse-Straße 1, 06120 Halle, Germany Germany; 3Leibniz-Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany

We present the plasmonic response of chiral and non-chiral metasurfaces fabricated by oblique angle deposition. Optical properties are extracted from line shape analysis of experimental data from spectroscopic 4 x 4 Mueller Matrix element measurements and experimental findings are supported by finite element simulations to verify the physical nature of the observed photonic behavior. The spectral tunability of plasmonic resonances will be discussed in terms of material design. Specifically, giant chiro-optical response in heterostructure helices is observed depending on the handedness of spirals and is represented by Kuhn’s dissymmetry factor.



18:15 - 18:30
ID: 482 / TOM9 S04: 2
TOM 9 Optics at Nanoscale (ONS)

Broadband near-infrared chiral properties of metasurfaces fabricated by nanosphere lithography

Emilija Petronijevic1, Alessandro Belardini1, Tiziana Cesca2, Carlo Scian2, Giovanni Mattei2, Concita Sibilia1

1Sapienza University of Rome, Italy; 2University of Padova, Italy

Plasmonic nanostructures with chiral shapes are able to tailor chiro-optical phenomena at the nanoscale, which is important for various applications spanning from chiral sensing to circularly polarized light emission. Here we use the cost- and time-effective nanosphere lithography and tilted metal deposition to fabricate various asymmetric geometrical shapes of plasmonic nanostructures organized in metasurfaces. We then perform broadband extrinsic chirality characterization in the near-infrared range. We demonstrate rich, resonance-governed, spin-dependent extinction.



18:30 - 19:00
Invited
ID: 549 / TOM9 S04: 3
TOM 9 Optics at Nanoscale (ONS)

New nonlinear chiroptical effects: second and third harmonic scattering from chiral nanoparticles

Ventsislav K, Valev

University of Bath, United Kingdom

Following our recent discovery of the Hyper Rayleigh Scattering Optical Activity (HRS OA) at the second harmonic frequency of illumination, we show that the effect is general and present a demonstration of HRS OA at the third harmonic frequency. The new effects take place in minuscule volumes of illumination (tens of µm3), which enabled the first chiroptical characterization of a single chiral nanoparticle revolving freely in an isotropic liquid environment. Our results open the way to technological applications of chiroptical characterization in tiny volumes, such as microdroplets.