Han Tao, Liu Xiang-Lian, Li Pu, Guo Xiao-Min, Guo Yan-Qiang, Wang Yun-Cai. Influence of the linewidth enhancement factor on the characteristics of the random number extracted from the optical feedback semiconductor laserJ. Acta Physica Sinica, 2017, 66(12): 124203. DOI: 10.7498/aps.66.124203