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We demonstrate all-semiconductor thin-film plasmonic absorbers, where strong absorption in these structures is linked to the excitation of highly-confined negative-index surface plasmon polaritons.We present numerical and analytical descriptions of guided modes of the system.
We introduce a compact absorption switch consisting of a plasmonic metal-dielectric-metal waveguide coupled to a multisection cavity. The optimized multisection cavity switch leads to greatly enhanced modulation depth compared to an optimized Fabry-Perot cavity switch.
We present a new model to investigate the behavior of metallic gratings. Resonators sustaining coupled plasmonic modes are introduced as the building blocks of gratings. We show with this refined model of the unit resonator the emergence of a new and unexplored outlook of grating architectures.
Subwavelength cavities are obtained by replacing conventional mirrors with reflecting metasurfaces that introduce arbitrary phase-shifts compensating for reduced accumulated phase through the ultra-small cavity. 100-nm cavities showed resonance in the range (0.6 – 1.1µm).
We propose an enhanced mid-to-near-infrared second harmonic generation (SHG) process relying on a silicon plasmonic microring resonator. The SHG efficiency is enhanced by two orders of magnitude compared to previous results.
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