Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"epsilon-near-zero"”.
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Designing Enhanced Nonlinearity in Plasmonic Devices with Epsilon-Near-Zero Films
… information processing motivates compact nonlinear photonic devices that can operate at low power. Silicon photonics is a mature platform for linear optical functions, but nonlinear operation remains challenging because of its weak Kerr response, two-photon absorption at telecommunication …
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Theory, Simulation, Fabrication and Testing of Double Negative and Epsilon Near Zero Metamaterials for Microwave Applications
… theory using the left hand rule. Additionally, "epsilon-near zero" (ENZ) metamaterials are characterized by a bulk permittivity equal to zero. Applications include focusing radiation emitted by small apertures. This thesis provides the theory for metamaterial structures supported by simulations …
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Plasmonic devices based on transparent conducting oxides for near infrared applications
… we study the impact of TCOs to local antenna as epsilon-near-zero (ENZ) substrate. The technological importance of the IR range is apparent and growing, and as plasmonics develops a niche at these frequencies, I believe this study represents a scientific directive toward the quest to bring …
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Extreme electromagnetic phenomena over an ultrathin platform
… different types of mathematical operations near the speed of light. Furthermore, nonlinear meta-structures are studied to manifest a second harmonic generation (SHG) effect from a concentric epsilon-near-zero (ENZ) material. The study shows that the plasmonic nanolayer of …
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Highly doped semiconductors for plasmonic waveguides and flat-composite gratings
Doped semiconductors are investigated as a foundation for plasmonic waveguides and gratings in the mid-infrared. The potential applications of plasmonics to the MIR are reviewed, along with a brief derivation of a mathematical formalism for hybrid plasmonic waveguides which utilize both doped …
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GHz Gravitational Wave and THz Dark Matter Detectors: Analysis and Simulation
Gravitational waves have been directly detected at sub-kHz frequencies. Detecting high-frequency gravitational waves (HFGWs) encounters challenges due to smaller interferometers and weaker astrophysical sources. A promising homodyne detector utilizes the inverse Gertsenshtein effect, where HFGWs …
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Leveraging free carriers effects for infrared photonic structures and devices
In this work, three types of novel photonic devices/structures were developed. The first one is a metal grating structure that combines the characters of ‘moth-eye’ structure and an extraordinary optical transmission grating. Therefore it has the capability to provide a uniform electrical …