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We numerically test our approach against two different types of pulse instability, namely second-order phase fluctuations and random phase instability, where the introduction of an adequate metric enables univocally quantifying the amount of instability. The approach is experimentally demonstrated with a supercontinuum fibre laser, where we observe and identify pulse train instabilities due to nonlinear propagation effects under anomalous dispersion conditions in the photonic crystal fibre used for spectral broadening. By replacing the latter with an all-normal dispersion fibre, we effectively correct the pulse train instability and increase the bandwidth of the generated coherent spectrum. This is further confirmed by temporal compression and measurement of the output pulses down to 15\u2009fs using dispersion\u00a0scan.<\/jats:p>","DOI":"10.1038\/s41598-020-64109-x","type":"journal-article","created":{"date-parts":[[2020,4,29]],"date-time":"2020-04-29T10:03:28Z","timestamp":1588154608000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Detection and elimination of pulse train instabilities in broadband fibre lasers using dispersion scan"],"prefix":"10.1038","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7649-1390","authenticated-orcid":false,"given":"Benjam\u00edn","family":"Alonso","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3688-7232","authenticated-orcid":false,"given":"Salvador","family":"Torres-Peir\u00f3","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8192-4472","authenticated-orcid":false,"given":"Rosa","family":"Romero","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4276-8846","authenticated-orcid":false,"given":"Paulo T.","family":"Guerreiro","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0345-277X","authenticated-orcid":false,"given":"Azahara","family":"Almagro-Ruiz","sequence":"additional","affiliation":[]},{"given":"H\u00e9ctor","family":"Mu\u00f1oz-Marco","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5872-8278","authenticated-orcid":false,"given":"Pere","family":"P\u00e9rez-Mill\u00e1n","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5716-7181","authenticated-orcid":false,"given":"Helder","family":"Crespo","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2020,4,29]]},"reference":[{"key":"64109_CR1","doi-asserted-by":"publisher","first-page":"6554","DOI":"10.1364\/AO.53.006554","volume":"53","author":"W Shi","year":"2014","unstructured":"Shi, W., Fang, Q., Zhu, X., Norwood, R. 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R.R. declares personal financial interest and employment with SPH. P.T.G. declares employment with SPH. H.C. declares co-authorship of a patent and personal financial interest (as co-founder and shareholder) with SPH. S.T.P., A.A.R., H.M.M. and P.P.M. declare employment with FYLA. P.P.M. declares personal financial interest (as shareholder) with FYLA. Patent 1: Universidade do Porto; M. Miranda, H. Crespo, T. Fordell, C. Arnold, A. L\u2019Huillier; WO2013054292A1; US9,397,463 B2, 19 July 2016; Granted in the USA; involving the dispersion\u00a0scan technique. Patent 2: SPH and Universidad de Salamanca; B. Alonso, I. J. Sola, H. Crespo; WO2019003102A1; Published; involving the self-calibrating dispersion\u00a0scan technique. SPH: Sphere Ultrafast Photonics, S.A. is a company that sells devices for the temporal measurement and compression of ultrashort laser pulses. FYLA: FYLA LASER SL is a company that sells fibre laser systems.","order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"7242"}}