Nd:YLF Laser System for the Study of Termolecular Reactions and Metastable Isomers of Polyatomic Molecules,
Final rept. 1 Apr-31 Dec 97,
CALIFORNIA UNIV SAN DIEGO LA JOLLA DEPT OF CHEMISTRY
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The DURIP grant F49620-97-1-0255 has supported acquisition of a state-of-the-art regeneratively amplified TiSapphire laser system. This laser system is the primary laser for our new multi-particle photoelectron photofragment coincidence spectrometer, and is currently being used to carry out experiments on three-body dissociation dynamics in clusters of oxygen and ozone. These experiments make use of a new particle detector built in our laboratory capable of recording the time and position of arrival of up to eight photofragments in a period of 20-500 ns following a laser pulse. The initial DURIP proposal discussed the purchase of a NdYLF psec regenerative amplifier, however, the TiSapphire laser purchased is a much more flexible and powerful laser, producing both psec and fsec pulses with a higher peak power. The initial experiments with this laser will use the fundamental and the 2nd, 3rd amd 4th harmonics. Future applications will include the generation of tunable radiation with an iptical parametric amplifier and ultrafast experiments using 100 fs pulses. We took delivery of the laser December 1, 1997, with initial installation December 12, 1997.
- Atomic and Molecular Physics and Spectroscopy