2026-09-17T14:55:21Zhttps://gredos.usal.es/oai/request

oai:gredos.usal.es:10366/1441212025-04-30T20:36:05Zcom_10366_133237com_10366_4512com_10366_3823col_10366_133238

Alonso Fernández, Benjamín López-Quintas, Ignacio Holgado Lage, Warein Drevinskas, Rokas Kazansky, Peter G. Hernández García, Carlos Sola Larrañaga, Iñigo Juan 2020-11-04T11:26:41Z 2020-11-04T11:26:41Z 2020-08-31 Alonso, B., Lopez-Quintas, I., Holgado, W., Drevinskas, R., Kazansky, P. G., Hernández-García, C., & Sola, Í. J. (2020). Complete spatiotemporal and polarization characterization of ultrafast vector beams. Communications Physics, 3(1), 151. https://doi.org/10.1038/s42005-020-00419-w http://hdl.handle.net/10366/144121 10.1038/s42005-020-00419-w 2399-3650 [EN]The use of structured ultrashort pulses with coupled spatiotemporal properties is emerging as a key tool for ultrafast manipulation. Ultrafast vector beams are opening exciting opportunities in different fields such as microscopy, time-resolved imaging, nonlinear optics, particle acceleration or attosecond science. Here, we implement a technique for the full characterization of structured time-dependent polarization light waveforms with spatiotemporal resolution, using a compact twofold spectral interferometer, based on in-line bulk interferometry and fibre-optic coupler assisted interferometry. We measure structured infrared femtosecond vector beams, including radially polarized beams and complex-shaped beams exhibiting both temporal and spatial evolving polarization. Our measurements confirm that light waveforms with polarization evolving at the micrometer and femtosecond scales can be achieved through the use of structured waveplates and polarization gates. This new scale of measurement achieved will open the way to predict, check and optimize applications of structured vector beams at the femtosecond and micrometer scales. We acknowledge funding from Junta de Castilla y León (SA287P18) and FEDER Funds, and from Spanish Ministerio de Economía y Competitividad (FIS2016-75652-P, FIS2017-87970-R, EQC2018-004117-P). C.H.-G. acknowledges support Ministerio de Ciencia, Innovación y Universidades for a Ramón y Cajal contract (RYC-2017-22745), cofunded by the European Social Fund. B.A. acknowledges funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Individual Fellowship grant agreement No. 798264. PGK acknowledges support of ERC project ENIGMA. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No. 851201). application/pdf eng Nature Ultrafast optics Polarization Ultrafast measurements Spatio-temporal polarization 2209.10 láseres 2214.02 Metrología Complete spatiotemporal and polarization characterization of ultrafast vector beams info:eu-repo/semantics/article info:eu-repo/semantics/updatedVersion https://doi.org/10.1038/s42005-020-00419-w FIS2016-75652-P FIS2017-87970-R EQC2018-004117-P SA287P18 RYC-2017-22745 798264 851201 info:eu-repo/semantics/openAccess Communications Physics 3 1 151