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Measurement of sulfur L2,3 and carbon K edge XANES in a polythiophene film using a high harmonic supercontinuum

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Title: Measurement of sulfur L2,3 and carbon K edge XANES in a polythiophene film using a high harmonic supercontinuum
Authors: Johnson, AS
Miseikis, L
Wood, DA
Austin, DR
Brahms, C
Jarosch, S
Strüber, CS
Ye, P
Marangos, JP
Item Type: Journal Article
Abstract: We use a high harmonic generated supercontinuum in the soft X-ray region to measure X-ray absorption near edge structure (XANES) spectra in polythiophene (poly(3-hexylthiophene)) films at multiple absorption edges. A few-cycle carrier-envelope phase-stable laser pulse centered at 1800 nm was used to generate a stable soft X-ray supercontinuum, with amplitude gating limiting the generated pulse duration to a single optical half-cycle. We report a quantitative transmission measurement of the sulfur L2,3 edge over the range 160-200 eV and the carbon K edge from 280 to 330 eV. These spectra show all the features previously reported in the XANES spectra of polythiophene, but for the first time they are measured with a source that has an approximately 1 fs pulse duration. This study opens the door to measurements that can fully time-resolve the photoexcited electronic dynamics in these systems.
Issue Date: 1-Nov-2016
Date of Acceptance: 30-Sep-2016
URI: http://hdl.handle.net/10044/1/42950
DOI: http://dx.doi.org/10.1063/1.4964821
ISSN: 2329-7778
Publisher: AIP Publishing
Journal / Book Title: Structural Dynamics
Volume: 3
Issue: 6
Copyright Statement: © 2016 Authors. Published by AIP Publishing. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Publication Status: Published
Conference Place: United States
Article Number: 062603
Appears in Collections:Quantum Optics and Laser Science
Physics
Faculty of Natural Sciences