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We report a new variant of the femtosecond transition-state spectroscopy technique−transient stimulated emission pumping (TSEP). The initial application of TSEP to studies of ozone visible photodissociation indicates that the molecule is trapped in the Franck–Condon region for ∼90 fs. The wave packet then spreads along the reaction coordinate.

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In this paper, we report on 500 mW of cw ultraviolet radiation at 360 nm, which has been obtained by intracavity frequency doubling of a Pr:YLF laser, end pumped by 1.8 W Coherent High Power OPS Laser at 479 nm. We have demonstrated the scalability of Pr:YLF laser to pump power of 5.3Watts, resulting in real continuous wave 2.5 Watts of output power at 720 nm and cw 1.3 Watts at 360 nm.

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