Measurement of sulfur L2,3and carbon K edge XANES in a polythiophene film using a high harmonic supercontinuum.
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 sulfurL2,3edge over the range 160-200 eV and the carbonKedge 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.
Blackett Laboratory, Imperial College London , Prince Consort Road, London SW7 2AZ, United Kingdom.
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Johnson
Blackett Laboratory, Imperial College London , Prince Consort Road, London SW7 2AZ, United Kingdom.
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Miseikis
Blackett Laboratory, Imperial College London , Prince Consort Road, London SW7 2AZ, United Kingdom.
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Wood
Blackett Laboratory, Imperial College London , Prince Consort Road, London SW7 2AZ, United Kingdom.
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Austin
Blackett Laboratory, Imperial College London , Prince Consort Road, London SW7 2AZ, United Kingdom.
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Brahms
Blackett Laboratory, Imperial College London , Prince Consort Road, London SW7 2AZ, United Kingdom.
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Jarosch
Blackett Laboratory, Imperial College London , Prince Consort Road, London SW7 2AZ, United Kingdom.
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Strüber
Blackett Laboratory, Imperial College London , Prince Consort Road, London SW7 2AZ, United Kingdom.
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Ye
Blackett Laboratory, Imperial College London , Prince Consort Road, London SW7 2AZ, United Kingdom.
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Marangos