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 12 of 12 for “"Polarization imaging"”.
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High-Resolution Low-Noise Polarization Imaging Sensor for Astronomical Applications
<p>Polarization imaging is useful to the field of astronomy because the polarization state caused by reflections, scattering events, and magnetic fields can be used to infer properties such as shape and index of refraction about celestial bodies. This work presents a low-noise high-resolution …
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A bio-inspired underwater multi-spectral and polarization imaging system
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
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Detecting the magnetic cosmic web through deep radio polarization imaging
The polarisation of radio emission is one of the most powerful probes of magnetic fields in the cosmos. Faraday rotation of polarized radiation provides one of the methods to observe magnetic fields. Measuring the rotation of the polarisation angle of radiation from an extragalactic source over a …
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Crosstalk and noise in division-of-focal-plane polarimeters and polarization imaging applications
… effects of crosstalk on estimation of relevant polarization parameters for biomedical applications using quantitative polarized light imaging. Also discussed is modeling for underwater geolocalization based upon polarized light fields.
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Design, fabrication and testing of a fiber optic stress/strain sensor for soft stretchable materials using polarization imaging technique
The polarization imaging technique has been used to obtain high quality surface images of turbid media. This technique can be slightly modified and used for noninvasive sensing of strain and stress in soft stretchable materials, such as latex and human tissues. Previously this sensing method was …
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Applications of Pump-Probe and Two-Photon Techniques in Time-Resolved Fluorescence Microscopy and Spectroscopy
… has proven to be an useful technique for imaging biological systems. Good spatial resolution, reduced photobleaching, and efficient rejection of excitation wavelength from emitted fluorescence are the main characteristics of this technique. As part of this work, extension of two-photon …
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Designing plasmonic structures
… combined with linear polarizers for full stokes polarization imaging; and (4) using plasmonic couplers to increase efficiency of metal-insulator-metal (MIM) tunnel junction detectors for use in the low THz. General conclusions about the efficacy of plasmonic structures, or the lack thereof, in …
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Analysis of signal-to-noise ratio of angle and degree of linear polarization in division of focal plane polarimeter
… has led to commercialization of single-chip polarization and color-polarization imaging sensors in the visible spectrum. Novel applications have arisen with the emergence of these sensors leading to questions about noise in the reconstructed polarization images. In this thesis, we provide …
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Polarization control and measurement with meta-optics
… elements which, if designed with explicit polarization dependence, provide a fascinating platform for new polarization optics. In this thesis, we present metasurface diffraction gratings designed to produce arbitrarily specified polarization states on a set of defined diffraction orders, …
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Applications of pump-probe and two-photon techniques in time-resolved fluorescence miscroscopy and spectroscopy
… from the focal volume and hence microscopic imaging using this technique results in axial depth discrimination and improved spatial resolution similar in two-photon excitation microscopy. Using this technique, spectroscopic data measuring the lifetime and rotational correlation time of …
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Quantitative anisotropy imaging with polarized interference microscopy
… for material characterization and biological imaging. Many optical anisotropy imaging techniques have been developed, such as fluorescence polarization microscopy(FPM), liquid crystal based polarization microscopy (LC Polscope), polarization state optical coherence tomography (ps OCT), and …
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Two-dimensional reflectivity polarization elastometry imaging techniques (PIET) of soft tissue
A non-invasive polarized light reflection measurement method to measure the stretch of soft tissue, such as skin, is described. The technique utilizes changes in the reflectivity of polarized light intensity as a monitor of skin stretch. Measurements on in-vitro pigskin and invivo human skin show …