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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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Collective Phonon-Polaritonic Modes in Silicon Carbide Subarrays
Guanyu Lu1, Christopher R Gubbin2, J Ryan Nolen3
1Department of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee 37212, United States.
ACS Nano
|December 27, 2021
Summary
Researchers engineered light-matter interactions using complex nanoscale patterns for localized surface phonon polaritons (LSPhPs). They achieved robust, tunable LSPhP modes with symmetric and antisymmetric near-fields for infrared applications.
Area of Science:
- Photonics and Nanophotonics
- Mid-infrared Optics
- Light-Matter Interactions
Background:
- Localized surface phonon polaritons (LSPhPs) enable light-matter interaction engineering in the mid-infrared spectrum.
- Previous studies primarily used simple unit cells, limiting design flexibility.
- Complex unit cells offer enhanced control over near-fields and spectral properties.
Purpose of the Study:
- To explore advanced unit-cell designs for LSPhP modes with greater design freedom.
- To investigate collectively excited LSPhP modes with symmetric and antisymmetric near-fields.
- To demonstrate hierarchical design of LSPhP resonances and near-field profiles.
Main Methods:
- Fabrication of nanopillar subarrays with varying numbers of elements.
- Characterization of LSPhP modes in engineered unit cells.
- Analysis of near-field properties and spectral tuning.
Main Results:
- Achieved collectively excited LSPhP modes with distinct symmetric and antisymmetric near-fields.
- Observed anomalous mode-matching of the collective symmetric mode, robust to subarray element variations.
- Demonstrated defect tolerance in fabricated subarrays.
Conclusions:
- Complex unit cells provide enhanced control over LSPhP resonances and near-field profiles.
- The demonstrated hierarchical design approach is suitable for advanced mid-infrared applications.
- LSPhP modes show promise for surface-enhanced spectroscopies and biochemical sensing.
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