Holographic X-ray detection
Abstract/Contents
- Abstract
- The ability to non-destructively image the interior of an object with X-rays has enabled huge advances in science and medicine. X-ray differential phase contrast (DPC) is the next generation in imaging, providing higher contrast for soft materials. However, X-ray DPC suffers from poor X-ray detector resolution. Typical commercial detectors have a fundamental physical tradeoff between image resolution and radiation dose. In this dissertation, I present a new method for X-ray detection that overcomes this fundamental limit. This new method uses photo refractive materials from the field of holography to create a high resolution detector which can, in conjunction with X-ray DPC techniques, measure the absorption and refraction of X-rays as they pass through objects. This new detector operates in three main stages: first, interfering X-rays record a hologram into a photorefractive crystal. Then, this crystal is illuminated with visible light to 'read-out' and digitally record the image. Finally, the crystal is erased with ultraviolet light after the image is collected. The result is an X-ray detector with an order of magnitude improvement in resolution (to 208 lp/mm), an order of magnitude improvement in quantum efficiency (to 80%), and a drastic reduction in production cost
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2020; ©2020 |
| Publication date | 2020; 2020 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Herring, George Kiyoshi |
|---|---|
| Degree supervisor | Hesselink, Lambertus |
| Thesis advisor | Hesselink, Lambertus |
| Thesis advisor | Pease, R. (R. Fabian W.) |
| Thesis advisor | Pianetta, Piero |
| Degree committee member | Pease, R. (R. Fabian W.) |
| Degree committee member | Pianetta, Piero |
| Associated with | Stanford University, Department of Electrical Engineering. |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | George Kiyoshi Herring |
|---|---|
| Note | Submitted to the Department of Electrical Engineering |
| Thesis | Thesis Ph.D. Stanford University 2020 |
| Location | electronic resource |
Access conditions
- Copyright
- © 2020 by George Herring
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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