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Electro-Optic Pockels Cell Voltage Sensors for Accelerator Diagnostics: Author: Iverson, Adam Joseph; Date: 2004-08-15; Program: Electrical Engineering; Abstract: Three prototype electro-optic Pockels cell voltage sensors were fabricated, each using a different electro-optic crystaL. These sensors were to be used in an electron particle accelerator with a pulse length outside of the working range of operation for current electrical B-dot probes. The three crystals of interest were bismuth germanium oxide (BGO), bismuth silicon oxide (BSO) and zinc selenide (ZnSe). Each crystal was bench tested at two different wavelengths to determine sensitivity. BSO was shown to be the most sensitive to voltage, followed by ZnSe. BGO was shown to be the least sensitiv...; Download File | View full details

Laser-Assisted Secondary Ion Mass Spectroscopy and its Applications in Practical Surface Analysis: Author: Karahan, Mehmet Cem; Date: 2004-08-15; Program: Electrical Engineering; Abstract: This thesis presents the development and the implementation of a combined practical surface analysis platform. The combined system incorporates a Laser Desorption (and Ablation) Mass Spectroscopy (LDMS) system into a Time-of- Flight Secondary Ion Mass Spectroscopy (ToF-SIMS) instrument under a single virtual control platform. This is accomplished via customized instrumentation control as well as data acquisition and analysis routines all implemented on the LabVIEW programming environment. The system is named Laser-Assisted Secondary Ion Mass Spectroscopy (LASIMS). The system has the flexibilit...; Download File | View full details

Mems 3-D Scan Mirror for an Endoscopic Confocal Microscope: Author: Shao, Yuhe; Date: 2005-12-15; Program: Engineering; Abstract: Optical MEMS is at a very exciting stage and has become an enabling technology for a variety of applications in telecommunications and high-resolution display and imaging. Among many novel MEMS devices, MEMS scanners and deformable membrane mirrors are especially useful for scanned-beam imaging systems. MEMS scanners are usually used for laser beam scanning. Deformable mirrors provide an approach to modify the optical wavefront adaptively. In optical microsystems, packaging is often a critical part of the system design. Combining functionalities at a single device can reduce complexity of the ...; Download File | View full details

Objective Lens for a Miniature Endoscopic Confocal Microscope: Author: El Ferradi, Nabil; Date: 2005-05-15; Program: Electrical Engineering; Abstract: This thesis presents the design and testing of a micro-objective lens for a miniature endoscopic confocal microscope. The advance of confocal endo-microscopy for in-situ imaging can lead to considerable improvements in inspection, analysis, and diagnosis, especially in the biomedical field. The dimensions of the objective lens developed are 4.0 mm long and 2.0 mm in diameter incorporated into a probe that is 2.0 mm in diameter and 10.0 mm long. The size of the probe will allow it to be inserted in some of the smallest channels in an endoscope. The objective lens features a 0.33 numerical apert...; Download File | View full details

Soil Penetrometer with Ramon Sampling, Fluorescence and Reflected Light Imaging: A Feasibility Study: Author: Kadiri, Youssef; Date: 2005-05-15; Program: Electrical Engineering; Abstract: This thesis describes the feasibility and capabilities of a Fluorescence Imaging and Raman Probe (FIRP). This miniature instrument will combine reflected light and fluorescence imaging and Raman spectroscopy for potential exobiology or terrestrial environmental use. With the help of a penetrometer, the probe might be used to assess the presence of life on Mars and gain an understanding of Martian soiL. Furthermore, this thesis will delineate how this penetrometer may be used to detect underground constituents and pollutants present on our own planet. The proposed FIRP will be incorporated into...; Download File | View full details

A combined confocal imaging and raman spectroscopy microscope for in vivo skin cancer diagnosis: Author: Arrasmith, Christopher Lyman; Date: 2008-12-15; Program: Electrical Engineering; Abstract: Confocal microscopy has provided a useful tool for imaging biopsied tissue samples. The cross sectioning ability inherent in confocal microscopes provides a method for viewing of cellular structure at different layers of a histology sample, allowing for optical cross sectioning and viewing structures below the surface of the sample. As a cancer diagnosis technique, confocal microscopy has been shown to provide valuable information showing differences in cell morphology of malignant and benign regions. Raman spectroscopy has also been shown to be a useful tool for cancer diagnosis in skin tissu...; Download File | View full details