135198 20260217205602.0 doi 10.1016/j.optlastec.2024.111034 sideral 138568 ART-2024-138568 eng Salgado-Remacha, Francisco Javier Universidad de Zaragoza (orcid)0000-0002-6048-310X Single-step self-compression of ultrashort pulses below 20 fs by all-fiber supercontinuum generation 2024 Access copy available to the general public Unrestricted We present an ultrashort-pulsed laser source with time-widths as short as 20 fs at around 1.5 µm. For this purpose, the pulses have been spectrally broadened and temporarily compressed by means of supercontinuum generation in a highly nonlinear optical fiber. Inspired by numerical simulations, we have experimentally confirmed that the emission of a resonant dispersive wave is a key indicator for the optimum configuration to achieve maximum temporal compression. No dispersion control stage is needed, which results in the simplicity of the system. An extensive analysis has been made concerning the quality of the pulses obtained, particularly in terms of time-width (at half height and at 1/e height of the maximum) as well as their time-bandwidth product. The complex retrieval of the pulses shows that the smallest temporal width obtained experimentally is 17 fs. A comparison with values found in the literature also shows that our pulses are among the best that can be found with this technology. info:eu-repo/grantAgreement/ES/MICINN/PID2019-105750GB-I00 info:eu-repo/semantics/openAccess by-nc https://creativecommons.org/licenses/by-nc/4.0/deed.es 5.0 2024 OPTICS 25 / 125 = 0.2 2024 Q1 T1 PHYSICS, APPLIED 49 / 187 = 0.262 2024 Q2 T1 1.0 2024 Atomic and Molecular Physics, and Optics 2024 Q1 Electronic, Optical and Magnetic Materials 2024 Q1 Electrical and Electronic Engineering 2024 Q1 9.2 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Jarabo, Sebastián Universidad de Zaragoza (orcid)0000-0002-2523-8598 2002 385 Universidad de Zaragoza Dpto. Física Aplicada Área Física Aplicada 2002 647 Universidad de Zaragoza Dpto. Física Aplicada Área Óptica 176 (2024), 111034 [9 pp.] Opt. Laser Technol. Optics and Laser Technology 0030-3992 4665450 http://zaguan.unizar.es/record/135198/files/texto_completo.pdf Versión publicada 2650828 http://zaguan.unizar.es/record/135198/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:135198 articulos driver 2026-02-17-20:45:15 ARTICLE