An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Zhang Y, Chen J, Hou G, Li D, Wu Y, Xu J, Xu L, Chen K.Zhang Y, et al. Among authors: xu l, xu j.Opt Express. 2020 Mar 2;28(5):6064-6070. doi: 10.1364/OE.384810.Opt Express. 2020.PMID: 32225863Free article.
Wu Y, Lin S, Liu J, Ji Y, Xu J, Xu L, Chen K.Wu Y, et al. Among authors: xu l, xu j.Opt Express. 2017 Sep 18;25(19):22648-22657. doi: 10.1364/OE.25.022648.Opt Express. 2017.PMID: 29041572Free article.
Liu Y, Xu J, Sun H, Sun S, Xu W, Xu L, Chen K.Liu Y, et al. Among authors: xu l, xu w, xu j.Opt Express. 2011 Feb 14;19(4):3347-52. doi: 10.1364/OE.19.003347.Opt Express. 2011.PMID: 21369157Free article.