doi:10.1364/OL.397033engSalgado-Remacha, F.J.Alonso, B.Crespo, H.Cojocaru, C.Trull, J.Romero, R.Lopez-Ripa, M.Guerreiro, P.T.Silva, F.Miranda, M.L''Huillier, A.Arnold, C.L.Sola, I.J.Single-shot d-scan technique for ultrashort laser pulse characterization using transverse second-harmonic generation in random nonlinear crystalsART-2020-119917We demonstrate a novel dispersion-scan (d-scan) scheme for single-shot temporal characterization of ultrashort laser pulses. The novelty of this method relies on the use of a highly dispersive crystal featuring antiparallel nonlinear domains with a random distribution and size. This crystal, capable of generating a transverse second-harmonic signal, acts simultaneously as the dispersive element and the nonlinear medium of the d-scan device. The resulting in-line architecture makes the technique very simple and robust, allowing the acquisition of single-shot d-scan traces in real time. The retrieved pulses are in very good agreement with independent frequency-resolved optical grating measurements. We also apply the new single-shot d-scan to a terawatt-class laser equipped with a programmable pulse shaper, obtaining an excellent agreement between the applied and the d-scan retrieved dispersions.2020http://zaguan.unizar.es/record/9559510.1364/OL.397033http://zaguan.unizar.es/record/95595oai:zaguan.unizar.es:95595info:eu-repo/grantAgreement/EUR/ERC/SISCAN-78992info:eu-repo/grantAgreement/ES/MINECO/EQC2018-004117-Pinfo:eu-repo/grantAgreement/ES/MINECO/FIS2017-87970-ROptics Letters 45, 14 (2020), 3925-3928byhttp://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccess