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. 2018 Feb 23;7:17180. doi: 10.1038/lsa.2017.180

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Copyright © 2018 The Author(s)

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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Characterization of the self-compressed driving pulses. (a) The input, measured, and retrieved spectra of the self-compressed driving pulse and the simulated spectrum (see Methods). The spectra extend from 1700 to 2500 nm. (b) The retrieved temporal intensity and phase measured by a home-built SHG-FROG, and the simulated pulse duration. The retrieved FWHM pulse duration of 15 fs agrees well with the Fourier transform limit of 15.5 fs, which is within measurement uncertainty. (c) The measured and retrieved SHG-FROG traces.