2012
DOI: 10.1103/physrevlett.109.233904
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Probing Polar Molecules with High Harmonic Spectroscopy

Abstract: We 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 amplit… Show more

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Cited by 94 publications
(64 citation statements)
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References 23 publications
(31 reference statements)
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“…ζ = 0.83. This improves the degree of field-free orientation compared to its first demonstration [39] by a factor of ∼15 and compared to previous high-harmonic studies of oriented molecules [40,65] by a factor of > 3.…”
Section: High-harmonic Spectroscopy Of Electronic Structurementioning
confidence: 66%
“…ζ = 0.83. This improves the degree of field-free orientation compared to its first demonstration [39] by a factor of ∼15 and compared to previous high-harmonic studies of oriented molecules [40,65] by a factor of > 3.…”
Section: High-harmonic Spectroscopy Of Electronic Structurementioning
confidence: 66%
“…The availability of oriented molecules provides a wealth of intriguing applications in a variety of molecular sciences, such as in chemical reaction dynamics [1][2][3][4][5], photoelectron angular distributions [6][7][8], or high-order harmonic generation [9][10][11]. An oriented molecule is characterized by the confinement of the molecular fixed axes along the laboratory fixed axes and by its dipole moment pointing in a particular direction.…”
Section: Introductionmentioning
confidence: 99%
“…High-harmonic generation from a linearly polarized driver is sensitive to inversion symmetry, the breaking of which leads to emission of even harmonics [15,16] that characterize the time-dependent electronic asymmetry of the studied sample [14,17]. In this Letter, we generalize the sensitivity of HHS to rotational symmetries of atoms and molecules and their time-dependent breaking by introducing bicircular HHS (BHHS), driven by a circularly polarized fundamental field of frequency ω and its counterrotating second harmonic 2ω.…”
mentioning
confidence: 99%