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Nanoscale polarization transient gratings

Foglia, Laura [Elettra Sincrotrone Trieste (Italy)] (ORCID:0000000222183886)·Wehinger, Björn [Elettra Sincrotrone Trieste (Italy); European Synchrotron Radiation Facility (ESRF), Grenoble (France); Ca’ Foscari University of Venice (Italy)] (ORCID:000000027089595X)·Perosa, Giovanni [Elettra Sincrotrone Trieste (Italy); Univ. degli Studi di Trieste (Italy)] (ORCID:0000000336392504)·Mincigrucci, Riccardo [Elettra Sincrotrone Trieste (Italy)] (ORCID:0000000163436256)·Allaria, Enrico [Elettra Sincrotrone Trieste (Italy)] (ORCID:0000000195706361)·Armillotta, Francesco [Univ. degli Studi di Trieste (Italy)] (ORCID:0000000172476428)·Brynes, Alexander [Elettra Sincrotrone Trieste (Italy)] (ORCID:0000000323437566)·Copus, Matthew [Univ. of Colorado, Colorado Springs, CO (United States)]·Cucini, Riccardo [Consiglio Nazionale delle Ricerche (CNR) (Italy)] (ORCID:0000000185161409)·De Angelis, Dario [Elettra Sincrotrone Trieste (Italy)] (ORCID:0000000191996373)·De Ninno, Giovanni [Elettra Sincrotrone Trieste (Italy); Univ. of Nova Gorica, Ajdovscina (Slovenia)] (ORCID:0000000246484413)·Engel, W. Dieter [Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy, Berlin (Germany)]·Fainozzi, Danny [Elettra Sincrotrone Trieste (Italy); Univ. of Bern (Switzerland)]·Giannessi, Luca [Elettra Sincrotrone Trieste (Italy); National Inst. of Nuclear Physics (INFN), Frascati (Italy)] (ORCID:0000000276439840)·Iacocca, Ezio [Univ. of Colorado, Colorado Springs, CO (United States)] (ORCID:0000000288705106)·Khatu, Nupur N. [Elettra Sincrotrone Trieste (Italy); Ca’ Foscari University of Venice (Italy); European XFEL, Schenefeld (Germany)]·Laterza, Simone [Elettra Sincrotrone Trieste (Italy); Univ. degli Studi di Trieste (Italy)] (ORCID:0000000289716608)·Paltanin, Ettore [Elettra Sincrotrone Trieste (Italy); Univ. degli Studi di Trieste (Italy)] (ORCID:0009000784905884)·Pelli-Cresi, Jacopo Stefano [Elettra Sincrotrone Trieste (Italy)]·Penco, Giuseppe [Elettra Sincrotrone Trieste (Italy)] (ORCID:0000000249006513)·Puntel, Denny [Univ. degli Studi di Trieste (Italy)] (ORCID:0000000235512570)·Ribič, Primož Rebernik [Elettra Sincrotrone Trieste (Italy)] (ORCID:000000025555601X)·Sottocorona, Filippo [Elettra Sincrotrone Trieste (Italy)]·Trovò, Mauro [Elettra Sincrotrone Trieste (Italy)]·von Korff Schmising, Clemens [Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy, Berlin (Germany)] (ORCID:0000000331593489)·Yao, Kelvin [Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy, Berlin (Germany)]·Masciovecchio, Claudio [Elettra Sincrotrone Trieste (Italy)] (ORCID:0000000285713522)·Bonetti, Stefano [Ca’ Foscari University of Venice (Italy)]·Bencivenga, Filippo [Elettra Sincrotrone Trieste (Italy); Univ. degli Studi di Trieste (Italy)]
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Abstract

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.

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36 MATERIALS SCIENCE75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITYCircular dichroismFree-electron lasersMagnetic properties and materials

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Foglia, Laura [Elettra Sincrotrone Trieste (Italy)] (ORCID:0000000222183886), Wehinger, Björn [Elettra Sincrotrone Trieste (Italy); European Synchrotron Radiation Facility (ESRF), Grenoble (France); Ca’ Foscari University of Venice (Italy)] (ORCID:000000027089595X), Perosa, Giovanni [Elettra Sincrotrone Trieste (Italy); Univ. degli Studi di Trieste (Italy)] (ORCID:0000000336392504), Mincigrucci, Riccardo [Elettra Sincrotrone Trieste (Italy)] (ORCID:0000000163436256), Allaria, Enrico [Elettra Sincrotrone Trieste (Italy)] (ORCID:0000000195706361), Armillotta, Francesco [Univ. degli Studi di Trieste (Italy)] (ORCID:0000000172476428), Brynes, Alexander [Elettra Sincrotrone Trieste (Italy)] (ORCID:0000000323437566), Copus, Matthew [Univ. of Colorado, Colorado Springs, CO (United States)], Cucini, Riccardo [Consiglio Nazionale delle Ricerche (CNR) (Italy)] (ORCID:0000000185161409), De Angelis, Dario [Elettra Sincrotrone Trieste (Italy)] (ORCID:0000000191996373), De Ninno, Giovanni [Elettra Sincrotrone Trieste (Italy); Univ. of Nova Gorica, Ajdovscina (Slovenia)] (ORCID:0000000246484413), Engel, W. Dieter [Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy, Berlin (Germany)], Fainozzi, Danny [Elettra Sincrotrone Trieste (Italy); Univ. of Bern (Switzerland)], Giannessi, Luca [Elettra Sincrotrone Trieste (Italy); National Inst. of Nuclear Physics (INFN), Frascati (Italy)] (ORCID:0000000276439840), Iacocca, Ezio [Univ. of Colorado, Colorado Springs, CO (United States)] (ORCID:0000000288705106), Khatu, Nupur N. [Elettra Sincrotrone Trieste (Italy); Ca’ Foscari University of Venice (Italy); European XFEL, Schenefeld (Germany)], Laterza, Simone [Elettra Sincrotrone Trieste (Italy); Univ. degli Studi di Trieste (Italy)] (ORCID:0000000289716608), Paltanin, Ettore [Elettra Sincrotrone Trieste (Italy); Univ. degli Studi di Trieste (Italy)] (ORCID:0009000784905884), Pelli-Cresi, Jacopo Stefano [Elettra Sincrotrone Trieste (Italy)], Penco, Giuseppe [Elettra Sincrotrone Trieste (Italy)] (ORCID:0000000249006513), Puntel, Denny [Univ. degli Studi di Trieste (Italy)] (ORCID:0000000235512570), Ribič, Primož Rebernik [Elettra Sincrotrone Trieste (Italy)] (ORCID:000000025555601X), Sottocorona, Filippo [Elettra Sincrotrone Trieste (Italy)], Trovò, Mauro [Elettra Sincrotrone Trieste (Italy)], von Korff Schmising, Clemens [Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy, Berlin (Germany)] (ORCID:0000000331593489), Yao, Kelvin [Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy, Berlin (Germany)], Masciovecchio, Claudio [Elettra Sincrotrone Trieste (Italy)] (ORCID:0000000285713522), Bonetti, Stefano [Ca’ Foscari University of Venice (Italy)], Bencivenga, Filippo [Elettra Sincrotrone Trieste (Italy); Univ. degli Studi di Trieste (Italy)]. 2024-12-30. Nanoscale polarization transient gratings. https://doi.org/10.1038/s41467-024-54799-6

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36 MATERIALS SCIENCE↗