RT Journal Article
T1 Using ensembles of dielectric nanoparticles in the FROG technique
A1 Pérez Benito, Óscar
A1 Weigand Talavera, Rosa María
AB We have implemented the FROG (frequency-resolved optical gating) technique for the characterization of ultrashort laser pulses in the range of tens of femtoseconds using ensembles of dielectric nanoparticles as the non-linear material for SHG (second-harmonic generation). In order to measure traces that could be retrieved with standard retrieval algorithms, a collinear configuration was needed to avoid undesirable effects from scattered light. The amplitude and phase of the retrieved pulses are in agreement with those obtained using BBO as nonlinear material. The large non-linear signals emitted by ensembles of nanoparticles and their low cost set them as an interesting alternative to autocorrelation to characterize ultrashort laser pulses in different spectral ranges. Since optical fiber lasers are now providing short pulses around tens of femtoseconds in many different spectral ranges, this field could greatly benefit from our findings.
PB Elsevier
SN 0030-3992
YR 2025
FD 2025-05
LK https://hdl.handle.net/20.500.14352/113527
UL https://hdl.handle.net/20.500.14352/113527
LA eng
NO Ó. Pérez-Benito, R. Weigand, Using ensembles of dielectric nanoparticles in the FROG technique, Optics & Laser Technology 183 (2025) 112289. https://doi.org/10.1016/j.optlastec.2024.112289.
NO CT63/19-CT64/19
NO Ministerio de Ciencia e Innovación (España)
NO Agencia Estatal de Investigación (España)
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 12 abr 2025