Shi Jian-Zhen, Xu Tian, Zhou Qiao-Qiao, Ji Xian-Ming, Yin Jian-Ping. Generation of no-diffraction hollow vertex beams with adjustable angular momentum by wave plate phase platesJ. Acta Physica Sinica, 2015, 64(23): 234209. DOI: 10.7498/aps.64.234209