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HELIOS-A laboratory based on high-order harmonic generation of extreme ultraviolet photons for time-resolved spectroscopy
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2015 (engelsk)Inngår i: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 86, nr 12, artikkel-id 123107Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In this paper, we present the HELIOS (High Energy Laser Induced Overtone Source) laboratory, an in-house high-order harmonic generation facility which generates extreme ultraviolet (XUV) photon pulses in the range of 15-70 eV with monochromatized XUV pulse lengths below 35 fs. HELIOS is a source for time-resolved pump-probe/two-color spectroscopy in the sub-50 fs range, which can be operated at 5 kHz or 10 kHz. An optical parametric amplifier is available for pump-probe experiments with wavelengths ranging from 240 nm to 20 000 nm. The produced XUV radiation is monochromatized by a grating in the so-called off-plane mount. Together with overall design parameters, first monochromatized spectra are shown with an intensity of 2 . 10(10) photons/s (at 5 kHz) in the 29th harmonic, after the monochromator. The XUV pulse duration is measured to be <25 fs after monochromatization.

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American Institute of Physics (AIP), 2015. Vol. 86, nr 12, artikkel-id 123107
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URN: urn:nbn:se:kth:diva-225463DOI: 10.1063/1.4937463ISI: 000368594900008PubMedID: 26724006Scopus ID: 2-s2.0-84951281197OAI: oai:DiVA.org:kth-225463DiVA, id: diva2:1195435
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QC 20180405

Tilgjengelig fra: 2018-04-05 Laget: 2018-04-05 Sist oppdatert: 2018-04-05bibliografisk kontrollert

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