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 15 of 15 for “"Optical Simulation"”.
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Design and analysis of solar cells by coupled electrical - optical simulation
<p>Careful electrical design and optical design are both crucial for achieving high-efficiency solar cells. It is common to link these two aspects serially; the optical design is first done to minimize reflection and maximize light trapping, and then the resulting optical generation rate is input …
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Fully coupled electrical and optical simulation of vertical cavity surface emitting lasers
… the quantum well which are used to compute the optical coupling strengths between electrons and holes in various subbands. It is shown that inclusion of an accurate bandstructure is important for obtaining correct laser output characteristics such as the modulation response. Finally, a fast new …
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An electro-optical simulation methodology for the analysis of single-event radiation effects in photonic devices
… devices that transmit and perform operations on optical signals. PICs offer significant benefits compared to conventional electronics, including increased data transmission rates. Despite the desire to leverage these benefits for space systems increasing in recent years, the study of radiation …
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Parametric Design, Modeling, and Optical Evaluation of Retroreflective Prismatic Structures
Retroreflectors (RR) are defined as passive optical structures that redirect incident light to its originating source. Specific types of retroreflectors called inverted cubes (ICs) function through total internal reflection (TIR) and are used in various applications such as measurement tools, …
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Fundamental studies of polyelectrolyte multilayer films : optical, mechanical, and lithographic property control
… and interactions of PEMs through the use of optical, mechanical, and chemical techniques. PEM rugate filters, wherein the refractive index varies through the depth of the film in a continuous, periodic fashion, were constructed by confining silver nanoparticle growth to layers of …
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A NOVEL DESIGN OF AN ALL-OPTICAL BISTABLE DEVICE USING A SINGLE ACTIVE ELEMENT
One of the main challenges in the area of all-optical information processing devices, is to develop low power and fast responding elements. Specically, in the eld of analog to digital converters (ADCs), higher modulation rates as well as enhanced power eciency are desired. The key component in such …
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Study on the photoelectric hot electrons generation and transport with metallic-semiconductor photonic crystals
… in metal-semiconductor junctions allows for optical-to- electrical energy conversion at photon energies below the bandgap of the semiconductor. Which opens new opportunities in optical sensors and energy conversion devices. In this thesis research, the wafer-scale metallic-semiconductor …
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Single-molecule orientation estimation using a polarisation camera
This thesis presents the development of a new optical imaging method for measuring the orientation and position of single fluorescent molecules. The method - named POLCAM - is based on the use of a polarisation camera. Current methods for single-molecule orientation estimation require optical …
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Streamlining the development of biophotoelectrodes: from rational design to rapid screening
… were systematically adjusted using a Monte-Carlo optical simulation. Electrodes optimised for light irradiation showed the highest current output when normalised by biocatalyst loading, but their overall output was limited by lower biocatalyst loading. Conversely, electrodes with the highest …
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Extension to pv optics to include front electrode design in solar cells
Proper optical designing of solar cells and modules is of paramount importance towards achieving high photovoltaic conversion efficiencies. Modeling softwares such as PV OPTICS, BIRANDY and SUNRAYS have been created to aid such optical designing of cells and modules; but none of these modeling …
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Microactuators and their application in micro-opto-electro-mechanical systems (MOEMS)
… Q factors. However in some applications, such as optical choppers, they require low Q factors so that they can be operated over a large frequency range. We have designed a comb drive actuator with spring that can be operated from a few Hz up to 5 kHz. The static and dynamic testing and theoretical …
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Multilayer solar selective coatings for high temperature solar applications: from concept to design
… contains aspects of very high novelty including optical simulation, coating deposition using cathodic vacuum arc (CVA) and advanced characterization. The computer program CODE was used to simulate the reflectance spectra of different complete coating. Simulated reflectance spectra were compared …
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Optical Satellite/Component Tracking and Classification via Synthetic CNN Image Processing for Hardware-in-the-Loop testing and validation of Space Applications using free flying drone platforms
… methodologies required for hardware in the loop simulation, testing, and validation of these new technologies outside of multimillion-dollar facilities are largely in their developmental stages. This dissertation proposes a novel approach for simulating space-based computer vision sensing and …
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Implementation of Residual Tandem Neural Networks for Photonic Inverse Design
… the modeling and design of nanophotonic and optical structures. Traditional full-wave simulations are time and resource-intensive, which can act as a bottleneck in photonic design. On the other hand, deep-learning approaches for designing the response of nanophotonic geometries can be …
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Spojování světla dvou zdrojů v integrační sféře
Novo vyvíjaná generácia koherenciou riadeného holografického mikroskopu bude vybavená fluorescenčným modulom. Práca pojednáva o základných princípoch a aplikácii fluorescenčnej mikroskopie vrátane popisu holografického mikroskopu. Je vykonaná a vyhodnotená rešerš dostupných svetelných zdrojov …