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Nonconcentric Multi-shell Nanowires: Geometry-Induced Plasmon Hybridization and Near-Field Localization
Gino Wegner, Jer-Shing Huang, Kurt Busch
Localized surface plasmons (LSPs) in multi-shell nanostructures provide a versatile route for controlling optical fields at the nanoscale, yet the influence of deviations from conc…
Dielectric metasurface-assisted cavity ring-down spectroscopy for thin-film circular dichroism analysis
Ankit Kumar Singh, Zhan-Hong Lin, Min Jiang +2
Chiral molecules show differences in their chemical and optical properties due to different spatial arrangements of the atoms in the two enantiomers. A common way to optically diff…
Broadband Four-Wave Mixing Enhanced by Plasmonic Surface Lattice Resonance and Localized Surface Plasmon Resonance in an Azimuthally Chirped Grating
Abhik Chakraborty, Parijat Barman, Ankit Kumar Singh +8
Plasmonic enhancement of nonlinear light-matter interaction can be achieved via dedicated optimization of resonant plasmonic modes that are spectrally matched to the different wave…
Nonlinear optical signal generation mediated by a plasmonic azimuthally chirped grating
Parijat Barman, Abhik Chakraborty, Denis Akimov +7
The deployment of plasmonic nanostructures to enhance nonlinear signal generation requires effective far-to-near field coupling and phase matching for frequency conversion. While t…
Optical responses of Fano resonators in non-spectral parametric domains
Ankit Kumar Singh, Jer-Shing Huang
Fano resonance observed in various classical and quantum systems features an asymmetric spectral line shape. For designing nanoresonators for monochromatic applications, it is bene…
Spectrometer-free optical hydrogen sensing based on Fano-like spatial distribution of transmission in a metal-insulator-metal plasmonic Doppler grating
Yi-Ju Chen, Fan-Cheng Lin, Ankit Kumar Singh +2
Optical nanosensors are promising for hydrogen sensing because they are small, free from spark generation, and feasible for remote optical readout. Conventional optical nanosensors…
Signal and Noise Analysis for Chiral Structured Illumination Microscopy
Shiang-Yu Huang, Ankit Kumar Singh, Jer-Shing Huang
Recently, chiral structured illumination microscopy has been proposed to image fluorescent chiral domains at sub-wavelength resolution. Chiral structured illumination microscopy is…
Simultaneous Imaging Achiral and Chiral Domains beyond Diffraction Limit by Structured-illumination Microscopy
Jiwei Zhang, Shiang-Yu Huang, Ankit Kumar Singh +1
Modern optical microscopy methods have been advanced to provide super resolution at high imaging speed, but not chirality discriminative. We recently proposed chiral structured-ill…
Plasmonic elliptical nanoholes for chiroptical analysis and enantioselective optical trapping
Zhan-Hong Lin, Jiwei Zhang, Jer-Shing Huang
A simple yet effective achiral platform using elliptical nanoholes for chiroptical analysis is demonstrated. Under linearly polarized excitation, an elliptical nanohole in a thin g…
Spatially Resolving the Enhancement Effect in Surface-Enhanced Coherent Anti-Stokes Raman Scattering by Plasmonic Doppler Gratings
Lei Ouyang, Tobias Meyer, Kel-Meng See +10
In this work, we introduce the platform of plasmonic Doppler grating (PDG) to experimentally investigate the enhancement effect of plasmonic gratings in the input and output beams…
Generation of Optical Chirality Patterns with Plane Waves, Evanescent Waves and Surface Plasmon Waves
Jiwei Zhang, Shiang-Yu Huang, Zhan-Hong Lin +1
We systematically investigate the generation of optical chirality patterns by applying the superposition of two waves in three scenarios, namely plane waves in free space, evanesce…
Chiral Structured Illumination Microscopy
Shiang-Yu Huang, Jiwei Zhang, Christian Karras +3
We propose a chiral imaging modality based on optical chirality engineering, fluorescence-detected circular dichroism and structured illumination microscopy. In this method, the op…
Symmetry-controlled second-harmonic generation in a plasmonic waveguide
Tzu-Yu Chen, Julian Obermeier, Thorsten Schumacher +4
A new concept for second-harmonic generation (SHG) in an optical nanocircuit is proposed. We demonstrate both theoretically and experimentally that the symmetry of an optical mode…
Plasmonic mode converter for controlling optical impedance and nanoscale light-matter interaction
Yun-Ting Hung, Chen-Bin Huang, Jer-Shing Huang
To enable multiple functions of plasmonic nanocircuits, it is of key importance to control the propagation properties and the modal distribution of the guided optical modes such th…
Atomic-scale confinement of optical fields
Johannes Kern, Swen Grossmann, Nadezda V. Tarakina +7
In the presence of matter there is no fundamental limit preventing confinement of visible light even down to atomic scales. Achieving such confinement and the corresponding intensi…
Dynamics of four-photon photoluminescence in gold nanoantennas
P. Biagioni, D. Brida, J. -S. Huang +5
Two-pulse correlation is employed to investigate the temporal dynamics of both two-photon photoluminescence (2PPL) and four-photon photoluminescence (4PPL) in resonant and nonreson…
Sub-wavelength localization of near-fields in coupled metallic spheres for single emitter polarization analysis
Po-Nan Li, Hsiu-Hao Tsao, Jer-Shing Huang +1
We numerically demonstrate selective near-field localization determined by the polarization state of a single emitter coupled to plasmonic nano-cluster. Seven gold nanospheres are…
Nanoantennas for visible and infrared radiation
Paolo Biagioni, Jer-Shing Huang, Bert Hecht
Nanoantennas for visible and infrared radiation can strongly enhance the interaction of light with nanoscale matter by their ability to efficiently link propagating and spatially l…
Atomically flat single-crystalline gold nanostructures for plasmonic nanocircuitry
Jer-Shing Huang, Victor Callegari, Peter Geisler +12
Deep subwavelength integration of high-definition plasmonic nanostructures is of key importance for the development of future optical nanocircuitry for high-speed communication, qu…
Mode imaging and selection in strongly coupled nanoantennas
Jer-Shing Huang, Johannes Kern, Peter Geisler +5
The number of eigenmodes in plasmonic nanostructures increases with complexity due to mode hybridization, raising the need for efficient mode characterization and selection. Here w…
Impedance matching and emission properties of optical antennas in a nanophotonic circuit
Jer-Shing Huang, Thorsten Feichtner, Paolo Biagioni +1
An experimentally realizable prototype nanophotonic circuit consisting of a receiving and an emitting nano antenna connected by a two-wire optical transmission line is studied usin…
Deterministic spatio-temporal control of nano-optical fields in optical antennas and nano transmission lines
J. S. Huang, D. V. Voronine, P. Tuchscherer +2
We show that pulse shaping techniques can be applied to tailor the ultrafast temporal response of the strongly confined and enhanced optical near fields in the feed gap of resonant…