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| Home > Publications database > Tracing few-femtosecond photodissociation dynamics on molecular oxygen with a single-color pump-probe scheme in the VUV |
| Journal Article | PUBDB-2016-05862 |
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2016
Inst.
Woodbury, NY
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Please use a persistent id in citations: doi:10.1103/PhysRevA.94.033411 doi:10.3204/PUBDB-2016-05862
Abstract: Molecular wave-packet dynamics in oxygen are studied in the time domain, using a single-color VUVpump–VUV-probe scheme. 17-fs VUV pulses, centered at 161 nm are generated via high-order harmonicgeneration driven by an intense 800-nm pulse leading to VUV pulse energies that reach 1.1 μJ per pulse. Anall-reflective interferometric pump-probe scheme is used for studying the delay dependence of the molecularoxygen ion signal with simultaneous nonresonant photoionization of krypton as a precise timing-reference.Access to the excited dissociative state lifetime is provided by the resulting delay-dependent O$_{2}^{+}$ signal,ultimately limited by the molecular ionization window. The ability to use a two-photon VUV probe providesthe delay-dependent detection of O$^+$ as an additional observable, extending the dissociation observationwindow.
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