Ultrafast x-ray multi-edge spectroscopy with 100kHz OPCPA-driven high harmonic generation source

Champenois, Elio G.

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https://hdl.handle.net/2142/104373 Copy

Description

Title

Ultrafast x-ray multi-edge spectroscopy with 100kHz OPCPA-driven high harmonic generation source

Author(s)

Champenois, Elio G.

Contributor(s)

• Wolf, Thomas J.A.
• Cryan, James P.
• Cordones-Hahn, Amy

Issue Date

2019-06-18

Keyword(s)

High-harmonic generation and XUV spectroscopy

Abstract

Time-resolved inner shell absorption spectroscopy is a sensitive and localized probe of valence electronic dynamics. By measuring the temporal evolution of near-edge absorption features of multiple atoms simultaneously, complex dynamics can be separated into the individual underlying processes. In the condensed phase, the migration of both electrons and holes can be tracked during photoinduced interfacial electron transfer between a Ruthenium (Ru) metal complex and a copper oxide (CuO) substrate via transient absorption measurements at the various molecular and substrate specific atomic edges. A femtosecond water window source spanning the Carbon, Nitrogen, and Oxygen~$K$-edges can also be used to follow the valence electronic dynamics and concerted nuclear motion of UV excited molecules such as nitrobenzene. We report progress on our development of such a source based on high harmonic generation (HHG) driven by a 100~kHz, $>$100~W optical chirped pulse parametric amplifier and transient absorption measurements of the above systems.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/104373

DOI

https://doi.org/10.15278/isms.2019.TK09

Copyright and License Information

Copyright 2019 Elio G. Champenois

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