On the generality of measuring ultrabroad-band ultrashort laser pulses with the d-scan technique using ensembles of dielectric nano- and microparticles

Pérez Benito, ÓscarCabrera Granado, EduardoGarcía Martín, SusanaGarcía González, EstherWeigand Talavera, Rosa María2023-08-022023-08-02© 2023 The20240030-399210.1016/j.optlastec.2023.109841https://hdl.handle.net/20.500.14352/87386We demonstrate that temporal characterization of ultrabroadband laser pulses (∼ 7 fs) through the d-scan technique can be implemented using ensembles of SHG micro and/or nanocrystals independently of their crystal size and/or composition. The experimental results have been supported by numerical simulations based on the Finite-Difference-Time-Domain (FDTD) algorithm. Both, experiment and simulations show that, in spite of the low optical quality of the samples and the unavoidable appearance of incoherent light, the technique is robust and allows to measure ultrashort laser pulses using clusters of randomly distributed and piled-up polar micro- and nanocrystals.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/On the generality of measuring ultrabroad-band ultrashort laser pulses with the d-scan technique using ensembles of dielectric nano- and microparticlesjournal article1879-2545https://doi.org/10.1016/j.optlastec.2023.109841https://www.sciencedirect.com/science/article/pii/S003039922300734X?via%3Dihubopen access535539.2:620.1535.374Second harmonic generationPolar perovskitesUltrashort pulse measurementD-scan techniqueFDTD simulationsÓptica (Física)LáseresÓptica CuánticaQuímica Inorgánica (Química)Física de materiales2209 Óptica2209.19 Óptica Física2206.07-1 Espectroscopia láser2303 Química Inorgánica2211 Física del Estado Sólido2209.10 Láseres2209.13 Óptica no Lineal