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Time resolved laser studies of gas phase and condensed phase molecules
Stockholm University, Faculty of Science, Department of Physics.
2001 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Different laser based techniques have been used to study lifetimes and spectra of gas phase molecules, and non-linear optical phenomena in condensed phase materials.

The lifetimes of several electronically excited states of the diatomic molecules vanadium oxide, VO, zirconium sulphide, ZrS, titanium sulphide, TiS and titanium oxide, TiO have been performed by resonant two-photon ionisation spectroscopy in a molecular beam combined with a time of flight mass spectrometer. The identities of some previously unknown electronically excited states in some of the molecules are proposed. The lifetimes of electronically excited states of BaCl have been determined using the delayed coincidence technique.

Femtosecond pump-supercontinuum-probe transient absorption spectroscopy was employed to study non-linear optical phenomena in UV fused silica, ethylene glycol, BK7-and BS7-optical glasses. Signals related to both the third (χ(3)) and the fifth (χ(5)) order non-linear susceptibilities were observed. The experimental results were compared with numerical simulations, and absolute values of the real and imaginary parts of the fifth order non-linear susceptibility of UV fused silica were determined.

Place, publisher, year, edition, pages
Stockholm: Department of Physics, Stockholm University , 2001. , 47 p.
National Category
Physical Sciences
Research subject
Physics
Identifiers
URN: urn:nbn:se:su:diva-71959ISBN: 91-7265-228-4 (print)OAI: oai:DiVA.org:su-71959DiVA: diva2:487408
Public defence
2001-02-27, 10:00 (English)
Opponent
Note

Härtill 6 uppsatser

Available from: 2012-01-31 Created: 2012-01-31 Last updated: 2017-09-28Bibliographically approved

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  • apa
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