Laser shaping and streaking for x-ray free-electron lasers
Abstract/Contents
- Abstract
- Lasers have been a versatile tool in facilitating x-ray free-electron lasers in various components of the machine. At the beginning of photocathode injectors, the properties of the drive laser determine the initial distribution of the electrons. Laser heater has been widely used to modulate electron bunch energy spread in order to suppress collective instabilities arising from dispersive sections in the accelerator. Interaction between optical lasers and the electron beam can be used to manipulate the phase space of the electron bunch to produce desirable shapes in the x-ray emission. After the x-ray photons have been generated, optical lasers are used in synchronization with the x-ray pulse to study dynamics in atomic and molecular systems. Moreover, they can provide single-shot diagnosis of the x-ray pulse, such as laser streaking, to extract valuable information about the x-ray pulse itself and the dynamic system under analysis, which can be challenging to probe directly. In this work we examine laser applications specifically in the Linac Coherent Light Source (LCLS). In the first half of the thesis, we focus on laser shaping techniques applied to the injector drive laser and the laser heater, in both spatial and temporal domains. We further discuss ghost imaging as an application of laser shaping in accelerators and its potential to be used in other x-ray and electron imaging experiments. In the second half, we switch gear to laser streaking as a measurement tool for attosecond x-ray pulses. We discuss in detail the generation of attosecond x-ray pulses at LCLS and present exciting results of the first single-shot characterization of such extremely short pulses using laser streaking.
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 | 2019; ©2019 |
| Publication date | 2019; 2019 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Li, Siqi, (Physics student) |
|---|---|
| Degree supervisor | Huang, Zhirong, 1968- |
| Thesis advisor | Huang, Zhirong, 1968- |
| Thesis advisor | Bucksbaum, Philip H |
| Thesis advisor | Raubenheimer, Tor O |
| Degree committee member | Bucksbaum, Philip H |
| Degree committee member | Raubenheimer, Tor O |
| Associated with | Stanford University, Department of Physics. |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Siqi Li. |
|---|---|
| Note | Submitted to the Department of Physics. |
| Thesis | Thesis Ph.D. Stanford University 2019. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2019 by Siqi Li
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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