Probing polar molecules with high harmonic spectroscopy

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DOIResolve DOI: http://doi.org/10.1103/PhysRevLett.109.233904
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TypeArticle
Journal titlePhysical Review Letters
Volume109
Issue23
Pages233904-1233904-5; # of pages: 5
AbstractWe bring the methodology of orienting polar molecules together with the phase sensitivity of high harmonic spectroscopy to experimentally compare the phase difference of attosecond bursts of radiation emitted upon electron recollision from different ends of a polar molecule. This phase difference has an impact on harmonics from aligned polar molecules, suppressing emission from the molecules parallel to the driving laser field while favoring the perpendicular ones. For oriented molecules, we measure the amplitude ratio of even to odd harmonics produced when intense light irradiates CO molecules and determine the degree of orientation and the phase difference of attosecond bursts using molecular frame ionization and recombination amplitudes. The sensitivity of the high harmonic spectrum to subtle phase differences in the emitted radiation makes it a detailed probe of polar molecules and will drive major advances in the theory of high harmonic generation.
Publication date
PublisherAmerican Physical Society
LanguageEnglish
AffiliationNRC Steacie Institute for Molecular Sciences; Security and Disruptive Technologies; National Research Council Canada
Peer reviewedYes
NPARC number21268073
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Record identifier3f357cf5-a7e9-4e67-9ff0-22b82dffa6d5
Record created2013-04-08
Record modified2016-05-09
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