High harmonic generation in ethylene with infrared pulses

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DOIResolve DOI: http://doi.org/10.1016/j.chemphys.2009.10.014
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TypeArticle
Journal titleChemical Physics
Volume366
Issue1-3
Pages3336; # of pages: 4
Subjectmolecular dynamics; ehtylene; photoionization; high harmonic generation; infrared laser; optical parametric amplifier
AbstractWe produce harmonics in the molecule ethylene (C₂H₄) with two different wavelengths and three pulse durations. Due to the low ionization potential (Ip = 10.5 eV) of C₂H₄, longer wavelengths are needed to extend the maximum photon energy produced. Our results show that regardless of the strong dependence of the efficiency of the harmonic generation process with wavelength, at 1820 nm the cutoff observed is larger than that obtained with 800 nm, 15 fs pulses. We obtain harmonics with energies exceeding 70 eV at 9.0 x 10¹³ W/cm² with a 73 fs 1820 nm pulse. Under these circumstances, the limiting factor for the further extension of the cutoff seems to be the phoionization cross section of the molecule.
Publication date
LanguageEnglish
AffiliationNRC Steacie Institute for Molecular Sciences; National Research Council Canada
Peer reviewedYes
NPARC number15188892
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Record identifiere3862c55-0594-4c58-bb53-0b0119a4f2cb
Record created2010-07-12
Record modified2016-05-09
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