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. 2017 Jan 31;7:9. doi: 10.1038/s41598-017-00053-7

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© The Author(s) 2017

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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One-dimensional measurement sensitivity of lateral shearing interferometry relative to that of an interferometer with external reference. The relative sensitivity of lateral shearing interferometry ranges from 0 to 2 with the variation of the lateral shear amount when the wavefront under test is in one-dimensional sinusoidal distribution.