Yu, Junjie Zhou, Changhe Jia, Wei Wu, Jun Zhu, Linwei Lu, Yancong Xiang, Changcheng Li, Shubin Media 3: Generation of controllable rotating petal-like modes using composited Dammann vortex gratings Originally published in Applied Optics on 01 March 2015 (ao-54-7-1667) 01 March 2015;ao;Generation;media;composited Dammann vortex gratings;Applied Optics;petal-like modes 2015-03-01
    https://opticapublishing.figshare.com/articles/media/Media_3_Generation_of_controllable_rotating_petal-like_modes_using_composited_Dammann_vortex_gratings/4899152
10.1364/AO.54.001667.m003