Propagation properties of off-axis multi-vortex-Gaussian beams in negative refractive index media
CHEN Rongquan ∗ , CHEN Yuanfu , WANG Qing , WU Zhigang
Chinese Journal of Quantum Electronics . 2022, (5): 795 -805 .  DOI: 10.3969/j.issn.1007-5461.2022.05.013