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Poster Session

Poster Session II

4:00 pm – 6:00 pm, Wednesday June 18 Session H00 Oregon Convention Center, Exhibit Hall E
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Polarization-Resolved Transient Absorption of the Strong-Field Ionization of Liquid Water

Poster 32
Presenter: Aaron M Ghrist (Stanford University)
Authors: Matt Bain (SLAC National Laboratory), Chuan Cheng (Stanford University), Ian Gabalski (Stanford University), Eleanor Weckwerth (Stanford University), Philip Bucksbaum (Stanford University)

Spectroscopically resolving the ultrafast valence electronic and nuclear changes involved in the photoionization of liquid water is a long-standing experimental goal. The orbital selectivity of strong-field ionization is a powerful tool for elucidating molecular pathways in the gas phase; we seek to leverage this to study the early states of liquid water upon being photoionized, offering a complementary set of experiments to two-photon and deep-UV excitation.

Here we present new results from the strong-field transient absorption of liquid water, looking at dynamics following valence to continuum transitions. In particular, we use the relative polarization between the strong-field pump and the broadband probe to study the strong-field excitation of liquid water in the tunneling regime, with sub-10 fs time resolution. These measurements aim to explore the importance of electronic delocalization in the strong-field ionization of extended systems. 

Funding acknowledgement

This research was supported by the National Science Foundation. A.M.G. was additionally supported by an NSF Graduate Research Fellowship.

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