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 “"Interferometric imaging"”.
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Quantum interferometric imaging and quantum nonlinear optics
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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Real time interferometric imaging of the plasma etch process
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Three Dimensional Interferometric Imaging at Terahertz Frequency for Concealed Object Detection
… of Technology (NJIT) [1] [2] [3] working on interferometric imaging with a spiral array. Their investigation stopped at two dimensional imaging with a two dimensional array. In this thesis, their idea was developed further into the significantly more complex imaging with a three dimensional …
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Dynamic nanometer alignment for nanofabrication and metrology
… by 25- nm lithography, a novel through-the-mask, interferometric imaging alignment method is described that has demonstrated detectivity below 1 nm. Approximately x-ray alignment and exposure system was constructed which incorporates this "Interferometric Broadband Imaging" (IBBI) alignment …
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Novel endoscopes for microscopic assessment of airway clearance using micro-optical coherence tomography
… this thesis, a novel, 1-pm resolution, optical interferometric imaging technique termed Micro-OCT was incorporated into miniaturized common-path endoscopes and mucociliary transport was visualized in vivo for the first time. The first-generation Micro-OCT probe had a rigid design with outer …
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Chemical Detection and Sensing Using Optical Interferometry
… total internal reflection refractometer with an interferometric imaging method. Two setups using 1550 nm and 635 nm measurement wavelengths were developed, with a detection rate of 1 second per measurement. Two processing methods using a fast Fourier transform algorithm to calculate n and d are …
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Inline Coherent Imaging of Laser Additive Manufacturing
… these techniques. In this thesis a low-coherence interferometric imaging technique, termed inline coherent imaging (ICI), is integrated into the selective laser melting process to monitor melt pool morphology changes and stability at 200 kHz with axial and transverse resolutions reaching 6 µm and …
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Spectral studies of small-scale auroral structure and plasma instability in the high-latitude ionosphere
… electron streams. Using multi-spectral imaging in combination with radar observations, a direct link is shown between ion-acoustic wave enhancements and precipitating electrons at 100 eV energies. Wave enhancements at the radar wavevector which are three orders of magnitude above the …
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Investigation of Radar Interferometric Techniques With Application to the Atmosphere
In this thesis various radar interferometric techniques for studying the atmosphere are investigated. The Radar interferometric imaging (RII) technique is a powerful remote sensing technique for the visualization and investigation of the cross-field dynamics of ionospheric plasma irregularity …
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Investigation of the multi-physics of laser-induced ignition of transportation fuels
… respect to flame propagation, schlieren and interferometric imaging techniques are used to examine early flame behavior, especially near flammability limits. This provides insight into the mechanisms controlling quenching of fuel-lean laser ignited flames as well as the time-scales involved. …
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Simultaneous Immersion Mirau Interferometry
The present work describes a novel imaging technique for label-free no-UV vibration-insensitive imaging of live cells in an epi-illumination geometry. This technique can be implemented in a variety of imaging applications. For example, it can be used for cell targeting as a part of a platform for …
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Interferometric Methods
… core of antennas, necessitating advances in imaging methods for these very dense cores versus more traditionally sparse instruments. Another ambitious experiment is the Hydrogen Epoch of Reionisation Array (HERA) in South Africa which hopes to make the first direct detection of the Epoch of …
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Spectral domain interferometry: A high-sensitivity, high-speed approach to quantitative phase imaging
… applications. Thus, quantitative phase imaging becomes an important technique to measure the phase variations due to the difference of refractive index and geometric thickness of various structures and materials within the biomedical specimens. In this thesis, a spectral modulation …
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Dynamic holography in semiconductors and biomedical optics
… drivers such as 3D printing and remote imaging for big data applications. Holography is a natural approach to recording and displaying three-dimensional information because it uses phase-sensitive interferometry to record interference patterns when a reference beam encounters coherent …
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Interferometric light microscopy for wafer defect inspection and three-dimensional object reconstruction
… defect inspection system based on laser interferometric microcopy, called epi-illumination diffraction phase microscopy (epi-DPM), to measure both the phase and amplitude of the scattered field from the wafer. To detect deep sub-wavelength defects, we further reduced the noise in the …