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. 2017 Nov 17;6(11):e17095. doi: 10.1038/lsa.2017.95

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Copyright © 2017 The Author(s)

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 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-nc-sa/4.0/

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Laser characterization (a) Fiber amplifier autocorrelation, the pulse-width is 120 fs assuming a sech² pulse shape, (b) Cross-correlation between fiber amplifier and diamond Raman laser, the pulse width is 220 fs, estimated to be 110 fs after decorrelation. (c) Diamond Raman laser autocorrelation, the pulse-width is 100 fs assuming a sech² pulse shape. (d) Measured and calculated spectra of the fiber amplifier, diamond Raman laser, and effective 2C2P excitation. The 2C2P spectra were calculated from a cross-correlation of the measured fiber amplifier and diamond laser spectra.