Hyperspectral and multivariate analyses of ultrafast experiments
Abstract/Contents
- Abstract
- Ultrafast laser pulses can be used to initiate, probe, and control molecular dynamics. In a typical pump-probe experiment, spectra are collected as a function of delay between two laser pulses. In control experiments, an experimental search is conducted to identify spectrally ``shaped" laser pulses that can guide the system into a desired target state. In both pump-probe and control experiments, hundreds or thousands of repeated measurements are made. I will discuss how multivariate statistics can be fruitfully applied to such experiments. First I discuss the photo-initiated ring opening of 1,3-cyclohexadiene (CHD) to form 1,3,5-hexatriene (HT) in the gas phase. By applying simplex-based spectral unmixing to spectra collected during a standard pump-probe experiment, it is possible to determine the number of transient photoproducts and to track their evolution. Then for control experiments in methanol and a simulated control experiment in diatomic iodine, I discuss how standard statistical methods such as principal component analysis can reveal the pulse features responsible for control and hint at the underlying dynamics.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2012 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | White, James Lynn |
|---|---|
| Associated with | Stanford University, Department of Applied Physics |
| Primary advisor | Bucksbaum, Philip H |
| Thesis advisor | Bucksbaum, Philip H |
| Thesis advisor | Fayer, Michael D |
| Thesis advisor | Kasevich, Mark A |
| Advisor | Fayer, Michael D |
| Advisor | Kasevich, Mark A |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | James Lynn White. |
|---|---|
| Note | Submitted to the Department of Applied Physics. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2012. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2012 by James Lynn White
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