Machine learning based adaptive optics for doughnut-shaped beam Zhang, Yiye ; Wu, Chenxue ; Song, Yanchun ; Si, Ke ; Zheng, Yao ; Hu, Lejia ; Chen, Jiajia ; Tang, Limin ; Gong, Wei Abstract Publication: Optics Express Pub Date: June 2019 DOI: 10.1364/OE.27.016871 Bibcode: 2019OExpr..2716871Z