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| Identifier |
000433216 |
| Title |
Part 1: Sensitive measurements of chirality with a cavitybased polarimeter. Part 2: Nanosecond-resolved magnetometry with spin polarized hydrogen atoms / Michail Xygkis; supervisor, prof. Peter T. Rakitzis. |
| Alternative Title |
Μέρος 1: Ευαίσθητες μετρήσεις χειρομορφίας με πολωσίμετρο κοιλότητας. Μέρος 2: Μαγνητομετρία χρονικής απόκρισης nanosecond με πολωμένα άτομα υδρογόνου |
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Author
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Ξύγκης, Μιχαήλ Σ.
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Thesis advisor
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Ρακιτζής, Πέτρος
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| Abstract |
This thesis is divided into two different parts. The first part focuses on chiral measurements using optical-cavity-enhanced polarimetry. Detecting and quantifying chirality plays a significant role in a variety of fields ranging from analytical and biological chemistry to pharmacology and fundamental physics. Potential applications of chiral sensing include drug design and synthesis, protein structure determination, and the study of parity non-conservation in select atomic/molecular transitions, which is a symmetry-breaking effect owing to the weak force, manifesting as optical activity. In the present study, the chirality of gases and biological liquid solutions was measured via our cavity-enhanced methods polarimetry. The basic idea behind the technique is that the weakly rotating samples are placed in a high-finesse optical cavity and, through multiple cavity passes, the amplification of the weak polarimetric signal is achieved. The second part focuses on magnetometry. Magnetometers have a wide variety of applications, including magnetic navigation, magnetic anomaly detection, current sensing, the measurement of biological magnetic fields, and much more. Conventional atomic magnetometers can typically operate down to the millisecond or sub-millisecond timescale. However, there are applications that require nanosecond or picosecond time resolution, such as the measurement of surface magnetism, and the ultrafast generation of magnetic fields with short-pulse lasers, with applications in laser fusion, particle-beam generation, and laboratory astrophysics. In this part of the thesis we investigate a novel low-cost, high-sensitivity technique for measuring magnetic fields with nanosecond time response, by detecting the hyperfine oscillation of an appropriately produced macroscopic time-depended polarization of electronic spins in the presence of a static or time-dependent magnetic field.
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| Language |
English |
| Issue date |
2020-11-20 |
| Collection
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School/Department--School of Sciences and Engineering--Department of Physics--Post-graduate theses
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Type of Work--Post-graduate theses
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| Permanent Link |
https://elocus.lib.uoc.gr//dlib/2/1/4/metadata-dlib-1602745015-31768-25473.tkl
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| Views |
353 |
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