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Nanoscale polarization transient gratings

Journal Article · · Nature Communications
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  1. Elettra - Sincrotrone Trieste S.C.p.A. (Switzerland); University of Colorado Colorado Springs
  2. Elettra - Sincrotrone Trieste S.C.p.A. (Switzerland); European Synchrotron Radiation Facility, Grenoble (France); Ca’ Foscari University of Venice (Italy)
  3. Elettra - Sincrotrone Trieste S.C.p.A. (Switzerland); Universitá degli Studi di Trieste (Italy)
  4. Elettra - Sincrotrone Trieste S.C.p.A. (Switzerland)
  5. Universitá degli Studi di Trieste (Italy)
  6. University of Colorado, Colorado Springs, CO (United States)
  7. CNR- Istituto Officina dei Materiali (IOM) (Italy)
  8. Elettra - Sincrotrone Trieste S.C.p.A. (Switzerland); University of Nova Gorica, Ajdovscina (Slovenia)
  9. Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy, Berlin (Germany)
  10. Elettra - Sincrotrone Trieste S.C.p.A. (Switzerland); University of Bern (Switzerland)
  11. Elettra - Sincrotrone Trieste S.C.p.A. (Switzerland); INFN Laboratori Nazionali di Frascati, Roma (Italy)
  12. Elettra - Sincrotrone Trieste S.C.p.A. (Switzerland); Ca’ Foscari University of Venice (Italy); European XFEL, Schenefeld (Germany)
  13. Ca’ Foscari University of Venice (Italy)
Light manipulation at the nanoscale is essential both for fundamental science and modern technology. The quest to shorter lengthscales, however, requires the use of light wavelengths beyond the visible. In particular, in the extreme ultraviolet regime these manipulation capabilities are hampered by the lack of efficient optics, especially for polarization control. Here, we present a method to create periodic, polarization modulations at the nanoscale using a tailored configuration of the FERMI free electron laser and demonstrate its capabilities by comparing the dynamics induced by this polarization transient grating with those driven by a conventional intensity grating on a thin ferrimagnetic alloy. While the intensity grating signal is dominated by the thermoelastic response, the polarization grating excitation minimizes it, uncovering helicity-dependent responses previously undetected. We anticipate nanoscale polarization transient gratings to become useful for the study of physical, chemical and biological systems possessing chiral symmetry.
Research Organization:
University of Colorado, Colorado Springs, CO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0024339
OSTI ID:
2491390
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 15; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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