High order diffraction suppression by quasi-periodic two-dimensional gratings Niu, Jiebin ; Shi, Lina ; Liu, Ziwei ; Pu, Tanchao ; Li, Hailiang ; Wang, Guanya ; Xie, Changqing Abstract Publication: Optical Materials Express Pub Date: February 2017 DOI: 10.1364/OME.7.000366 Bibcode: 2017OMExp...7..366N