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. 2020 Jul 28;10:12643. doi: 10.1038/s41598-020-69390-4

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Separation of nanocones with unfolding singularity. Superposition of linearly polarized Gaussian and VV beams produced by a detuned q-plate, topological charge of $q = - 1$ , with different relative weights of (a) 10:90, (b) 15:85, (c) 20:80 (d) 25:75. Top panels shows the SEM images of two nano-cones generated by a single laser pulse with an energy of 310 nJ. The bottom panels show the corresponding intensity profiles. Separation between the singularities increases with increase in the Gaussian component.