Transformation and simulation of Gaussian beams   through spherical refractive surfaces
QIN Hua,ZHANG Shuang,LI Wen-rui,WEI Gong-xiang,LIU Yun-yan
College Physics . 2017, (2): 11 -17 .  DOI: 10.16854 /j.cnki.1000-0712.2017.02.004