Femtosecond laser studies of molecular wavepacket dynamics in the cesium dimer

Femtosecond laser pump-probe experiments have been applied to the study of vibrational wavepacket dynamics in the excited states of the cesium dimer, Cs$\sb2.$ The real-time vibrational motion of the molecule is observed by probing the quantum motion of the wavepacket on a potential surface by a pair of time-delayed ultrafast laser pulses. Specifically, pumping the \rm C(\sp1\Pi\sb{u})\gets X(\sp1\Sigma\sb{g}\sp+) Cs\sb2 band at several wavelengths between 627 nm and 650 nm produces a wavepacket with an oscillation period of $\sim$1.15 psec. The wavepacket is detected by photoionizing the excited molecule with a time-delayed probe pulse. The wavepacket oscillations persist for approximately 20 psec, and their decay is attributed to the dephasing of the vibrational wavefunctions that comprise the wavepacket.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Electrical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Rodriguez, George

Contributors dc:contributor

• Eden, James G.

• Chemistry, Physical
• Physics, Molecular
• Physics, Optics

Statement dc:rights

• Copyright 1993 Rodriguez, George

Language dc:language

eng

Identifier

AAI9314931
(UMI)AAI9314931

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/22033