Electronic and vibrational dynamics of photo-excited A7 structures
Abstract/Contents
- Abstract
- The interaction of intense femtosecond laser pulses with matter leads to highly excited transient states far from equilibrium. The dynamics of these excited states relate to many applications from laser machining to energy conversion. Ultrafast optical and x-ray light-scattering has emerged as a powerful experimental method to study material dynamics on the time-scale of atomic and even electronic motion. Here I report results of ultrafast coherent and squeezed phonon scattering experiments in bismuth and antimony. In response to laser-generated coherent phonons, I find dynamics of the coherent A1g vibrational mode greatly dependent on non-thermal electronic band-occupation. And in response to laser generated squeezed phonons, I find anisotropic changes in dynamical forces evidenced by differentiated high wavevector acoustic mode softening. These results advance our understanding of microscopic electron-electron and electron-phonon interactions in transient systems.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2015 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Bray, Crystal Christina LaToni | |
|---|---|---|
| Associated with | Stanford University, Department of Applied Physics. | |
| Primary advisor | Reis, David A, 1970- | |
| Thesis advisor | Reis, David A, 1970- | |
| Thesis advisor | Fisher, Ian | |
| Thesis advisor | Reed, Evan J | |
| Advisor | Fisher, Ian | |
| Advisor | Reed, Evan J |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Crystal Christina LaToni Bray. |
|---|---|
| Note | Submitted to the Department of Applied Physics. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2015. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2015 by Crystal Christina Bray
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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