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dc.contributor.authorMustary, Mumta Henaen_US
dc.contributor.authorLaban, Daneen_US
dc.contributor.authorWood, Jamesen_US
dc.contributor.authorPalmer, Adamen_US
dc.contributor.authorHoldsworth, Jen_US
dc.contributor.authorLitvinyuk, Igoren_US
dc.contributor.authorSang, Roberten_US
dc.description.abstractWe describe an extreme ultraviolet (XUV) interferometric technique that can resolve ~100 zeptoseconds (10−21 s) delay between high harmonic emissions from two successive sources separated spatially along the laser propagation in a single Gaussian beam focus. Several improvements on our earlier work have been implemented in the advanced interferometer. In this paper, we report on the design, characterization and optimization of the advanced Gouy phase interferometer. Temporal coherence for both atomic argon and molecular hydrogen gases has been observed for several harmonic orders. It has been shown that phase shift of XUV pulses mainly originates from the emission time delay due to the Gouy phase in the laser focus and the observed interference is independent of the generating medium. This interferometer can be a useful tool for measuring the relative phase shift between any two gas species and for studying ultrafast dynamics of their electronic and nuclear motion.en_US
dc.publisherInstitute of Physics Publishingen_US
dc.publisher.placeUnited Kingdomen_US
dc.relation.ispartofjournalJournal of Physics B: Atomic, Molecular and Optical Physicsen_US
dc.subject.fieldofresearchAtomic, Molecular, Nuclear, Particle and Plasma Physics not elsewhere classifieden_US
dc.subject.fieldofresearchAtomic, Molecular, Nuclear, Particle and Plasma Physicsen_US
dc.subject.fieldofresearchOptical Physicsen_US
dc.titleAdvanced Gouy phase high harmonics interferometeren_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Articlesen_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, School of Environment and Scienceen_US
gro.hasfulltextNo Full Text

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