Zhao Ying-Chun, Zhang Xiu-Ying, Yuan Cao-Jin, Nie Shou-Ping, Zhu Zhu-Qing, Wang Lin, Li Yang, Gong Li-Ping, Feng Shao-Tong. Dark-field digital holographic microscopy by using vortex beam illuminationJ. Acta Physica Sinica, 2014, 63(22): 224202. DOI: 10.7498/aps.63.224202