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 10 of 10 for “"optical microcavities"”.
-
The physics and chemistry of semiconductor nanocrystals in sol-gel derived optical microcavities
… platform in which to investigate the nonlinear optical properties of NCs. This thesis summarizes our present understanding of the chemistry of the incorporation process and the applications and underlying optical physics that was gleaned from studying these NC-doped sol-gel structures. Chapter 2 …
-
Dynamical Tunneling in Systems with a Mixed Phase Space
… data is found for kicked systems, billiards, and optical microcavities, if nonlinear resonances are negligible. Semiclassically, however, such nonlinear resonance chains dominate the tunneling process. Hence, we combine our approach with an improved resonance-assisted tunneling theory and derive a …
-
Modeling of fluids and waves with analytics and numerics
… such as lasers and nonlinear devices require optical microcavities with long lifetimes Q and small modal volumes V. While most microcavities are designed mostly by hand using some understanding of the physical principles of the confinement, we let the computer discover its own structures. We …
-
The study of surface SHG and polygonal microcavity design for nonlinear applications on LiNbO<sub>3</sub>
… (SHG) studies and for the designs of polygonal microcavities for nonlinear applications. <br/><br/>Reflection second harmonic generation (RSHG) experiments were performed on LiNbO<sub>3</sub> to reveal the interfacial layer symmetry as the crystal is rotated around the z axis. RSHG was also …
-
Resonant Spatial Light Modulation: Optical Programming and Sensing at the Fundamental Limit
… and compact manipulation of multimode optical signals is required for technologies ranging from brain imaging to quantum control, yet remains an open goal for present-day spatial light modulators (SLMs), active metasurfaces, and optical phased arrays. Here, we develop wavelength-scale, …
-
Exciton transport and coherence in molecular and nanostructured materials
Over the past 20 years a new classes of optically active materials have been developed that are composites of nano-engineered constituents such as molecules, polymers, and nanocrystals. These disordered materials have enabled devices such as organic light emitting diodes, color tunable lasers, and …
-
Design, fabrication and characterization of resonant waveguide grating based optical biosensors
… home based point-of-care diagnostics. Label-free optical biosensing with high sensitivity, throughput, compactness, and low cost, plays an important role to resolve these diagnostic challenges and pushes the detection limit down to single molecule. Optical nanostructures, specifically the resonant …
-
Fractal Dimensions in Classical and Quantum Mechanical Open Chaotic Systems
… suitable models for experimental setups such as optical microcavities or microwave resonators. In this thesis we perform an improved investigation of the fractality in these systems using the concept of effective dimensions. They are defined as the dimensions far from the usually considered …
-
Development of Nanostructured Light Emitters in Gallium Nitride
… This thesis explores methods of structural and optical characterisation of such nanostructures using electron microscopy and in-situ cathodoluminescence, resolving structural features that correlate with cathodoluminescence images, and providing insight into the differences between QD samples …
-
Interactions of Organic Fluorophores with Plasmonic Surface Lattice Resonances
… regime. These intense optical effects are due, at least in large part, to the localized surface plasmon resonances (LSPRs) of the particles, and in particles in the 5 nm to 200 nm width range, the dipolar LSPRs, in which incident light excites an oscillating electric …