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.
Results
Showing 1 to 20 of 73 for “"Nanophotonic"”.
-
Computational investigations of nanophotonic systems
In this thesis, I developed code in the MEEP finite-difference time domain classical electromagnetic solver to simulate the quantum phenomenon of spontaneous emission and its enhancement by a photonic crystal. The results of these simulations were favorably cross-checked with semi-analytical …
-
Nanophotonic visible light phased arrays
Previously demonstrated integrated optical phased arrays have primarily been implemented in silicon-based platforms and have therefore been limited to operation at infrared wavelengths, where silicon provides low-loss transmission. Developing integrated optical phased arrays for visible wavelengths …
-
Nonlinear Applications using Silicon Nanophotonic Wires
… of nonlinear-optical applications using silicon nanophotonic "wires" fabricated on a silicon-on-insulator photonic chip. These deeply scaled silicon nanophotonic wires are capable of confining the telecom and mid-infrared (mid-IR) light tightly into an optical-modal area ~ 0.1 𝜇m². The tight …
-
Nanophotonic Optomechanical Devices for Torque Magnetometry
… in state-of-the-art devices. In this thesis, a nanophotonic cavity is integrated into a nanomechanical resonator for optomechanical detection of torque driven by the interaction of a permalloy island with applied magnetic fields. This marks the first time were a nanocavity optomechanical sensor …
-
Accurate characterization of nanophotonic grating structures
Augmented reality waveguides are designed to have grating regions to in-couple, out-couple, and propagate light from a light engine to the user. This thesis develops two reliable systems to qualify manufactured waveguides. The first system determines grating quality by measuring grating pitch and …
-
Light-matter interaction in silicon nanophotonic structures
In this thesis light matter interactions in the weak coupling regime are investigated in Si-based photonic devices. At first, spectroscopic investigation of energy transfer among Er ions and Si-nanoparticles for optical amplification has been reported. Successively, light propagation in dielectric …
-
A nanophotonic platform for the tin-vacancy centre
Quantum networking will enable quantum devices to exchange information. As of today, the technology is still at an early research stage, and entanglement has only been demonstrated at low rates and between a few nodes. Among the concerted efforts to establish new scalable architectures, colour …
-
Nanophotonic split-ring resonators as dichroics for molecular spectroscopy
The unique optical properties of metallic nanostructures have enabled the creation of a new generation of ultra sensitive biosensors based on vibrational spectroscopy. Through strict engineering of structural morphology, a nanometal’s free electrons can be tuned to resonate at a particular …
-
Novel terahertz and nanophotonic lasers : theory, design, and fabrication
In this thesis, we will explore numerical modeling and fabrication of laser sources. First, we demonstrate and distinguish experimentally the existence of special type of Fano resonances at k~~0 in a macroscopic two-dimensional photonic crystal slab. We fabricate a square lattice array of holes in …
-
Diamond nanophotonic devices for quantum information processing and sensing
The nitrogen vacancy (NV) center in diamond has in recent years emerged as a promising solid state system for quantum information processing and sensing applications. However, using NV centers to build up quantum networks for these applications faces several challenges, such as the lack of …
-
Precision Tuning of Silicon Nanophotonic Devices through Post-Fabrication Processes
… improving the performance of fundamental silicon nanophotonic devices through post-fabrication processes. These devices include numerous optical resonator designs as well as slow-light waveguides. Optical resonators are used to confine photons both spatially and temporally. In recent years, there …
-
Design of multidimensional nanophotonic materials with improved performance and functionalities
… on the development of 3D PhCs as well as other nanophotonic technologies.
-
Control of Radiative Heat and Momentum Transfer by Nanophotonic Engineering
Radiative transfer of electromagnetic energy and momentum between objects is one of fundamental and ubiquitous processes in nature. The ability to control it is crucial for various optoelectronic and optomechanical engineering applications including optical sensing, photovoltaics, and object …
-
An investigation of optical properties in active and passive nanophotonic devices
… of nanostructure design for active and passive nanophotonics devices. <br/><br/>The active device part focuses on organic light-emitting diodes (OLEDs), widely used new-generation display devices. The attention is concentrated on improving the light extraction of OLED devices, and different …
-
DDA-based Inverse Design of Nanophotonic Metasurfaces: a Benchmarking of Optimization Techniques
… for metasurface inverse design in the field of nanophotonics. Each technique is detailed and implemented, comparing and contrasting the results produced by the numerical methods. A unique DDA solver is used to speed up the computation of the electromagnetic fields, which are used to determine …
-
Ultra-thin photovoltaic technologies with nanophotonic textures for enhanced solar energy harvesting
Ultra-thin solar cells are a nascent photovoltaic strategy that holds ample advantages compared to conventional thick technologies, spanning from cost and material savings to low weight and flexibility. Solar cells on this length-scale also exhibit intrinsic tolerance to radiation damage, thus …
-
A Platform for Practical Nanophotonic Systems Nitrides and Oxides for Integrated Plasmonic Devices
The fields of nanophotonics and metamaterials have revolutionized the way we think of optical space (ε,µ), enabling us to engineer the refractive index almost at will, to confine light to the smallest of volumes, as well as to manipulate optical signals with extremely small foot prints and energy …
-
HIGH PERFORMANCE NANOPHOTONIC CAVITIES AND INTERCONNECTS FOR OPTICAL PARAMETRIC OSCILLATORS AND QUANTUM EMITTERS
… of cutting-edge technologies. High performance nanophotonic cavities and interconnects present opportunities to solve outstanding issues in the integration of nanophotonic devices. In this dissertation I develop three core tools required for the comprehensive integration of quantum emitters: …
Page 1 of 4