Polarization shaping of high-order harmonics in laser-aligned molecules

被引：0
作者：
E. Skantzakis
S. Chatziathanasiou
P. A. Carpeggiani
G. Sansone
A. Nayak
D. Gray
P. Tzallas
D. Charalambidis
E. Hertz
O. Faucher
机构：
[1] Foundation for Research and Technology-Hellas,Department of Physics
[2] Institute of Electronic Structure and Laser,undefined
[3] P.O. Box 1527,undefined
[4] University of Crete,undefined
[5] P.O. Box 2208,undefined
[6] ELI-ALPS,undefined
[7] ELI-Hu Kft.,undefined
[8] Institute of Photonics and Nanotechnologies (IFN)-Consiglio Nazionale delle Ricerche (CNR),undefined
[9] Dipartimento di Fisica Politecnico,undefined
[10] Laboratoire Interdisciplinaire CARNOT de Bourgogne,undefined
[11] UMR 6303 CNRS-Université Bourgogne Franche-Comté,undefined
来源：
Scientific Reports | / 6卷
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摘要：
The present work reports on the generation of short-pulse coherent extreme ultraviolet radiation of controlled polarization. The proposed strategy is based on high-order harmonics generated in pre-aligned molecules. Field-free molecular alignment produced by a short linearly-polarized infrared laser pulse is used to break the isotropy of a gas medium. Driving the aligned molecules by a circularly-polarized infrared pulse allows to transfer the anisotropy of the medium to the polarization of the generated harmonic light. The ellipticity of the latter is controlled by adjusting the angular distribution of the molecules at the time they interact with the driving pulse. Extreme ultraviolet radiation produced with high degree of ellipticity (close to circular) is demonstrated.
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