[1] P. Coullet, L. Gill, F. Rocca. Optical vortices ［J］. Opt. Commun., 1989, 73(5): 403～408

[2] L. Allen. Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modes ［J］. Phys. Rev. A, 1992, 45(11): 8185～8189

[3] G. Ginson, J. Courtial, M. J. Padgett. Free-space information transfer using light beams carrying orbital angular momentum［J］. Opt. Express, 2004, 12(22): 5448～5456

[4] H. He, M. E. Friese, N. R. Heckenberg. Direct observation of transfer of angular momentum to absorptive particles from a laser beam with a phase singularity［J］. Phys. Rev. Lett., 1995, 75(5): 826～829

[5] J. E. Curtis, B. A. Koss, D. G. Grier. Dynamic holographic optical tweezers［J］. Opt. Commun., 2002, 207: 169～175

[6] Lu Xuanhui, Huang Huiqin, Zhao Chengliang et al.. Optical vortex beams and optical vortices［J］. Laser & Optoelectronics Progress, 2008, 45(1): 50～56

[7] Chen Ziyang, Zhang Guowen, Rao Lianzhou et al.. Determining the orbital angular momentum of vortex beam by Young′s double-slit interference experiment［J］. Chinese J. Lasers, 2008, 35(7): 1063～1067

[8] He De, Yan Hongwei, Lü Baida. Evolution and composite optical vortices of Hermite-Gaussian vortex beams［J］. Chinese J. Lasers, 2009, 36(8): 2023～2029

[9] D. M. Palacios, I. D. Maleev, A. S. Marathay et al.. Spatial correlation singularity of a vortex field［J］. Phys. Rev. Lett., 2004, 92(14): 143905

[10] G. A. Swartzlander, J. Jr. Schmit. Temporal correlation vortices and topological dispersion［J］. Phys. Rev. Lett., 2004, 93(9): 093901

[11] I. D. Maleev, G. A. Jr. Swartzlander. Propagation of spatial correlation vortices［J］. J. Opt. Sci. Am. B, 2008, 25(6): 915～922

[12] I. D. Maleev, D. M. Palacios, A. S. Marathay et al.. Spatial correlation vortices in partially coherent light: theory［J］. JOSA B, 2004, 21(11): 1895～1900

[13] Cheng Ke, Zhang Hongrun, Lü BaiDa. Coherence vortex properties of partially coherent vortex beams［J］. Acta Physica Sinica, 2010, 59(1): 246～255

[14] Cheng Ke, Lü Baida. Spatial correlation properties and correlation vortices of partially coherent vortex beams diffracted by an aperture ［J］. Mod. Opt., 2009, 56(9): 1119～1127

[15] Y. D. Liu, C. Q. Gao, M. W. Gao et al.. Coherent-mode representation and orbital angular momentum spectrum of partially coherent beam［J］. Opt. Commun., 2008, 281(8): 1968～1975

[16] H. Di Lorenzo Pires, J. Woudenberg, M. P. Van Exter. F. Measurement of the orbital angular momentum spectrum of partially coherent beams ［J］. Opt. Lett., 2010, 35(6): 889～891

[17] L. Mandel, E. Wolf. Optical Coherence and Quantum Optics［M］. Cambridge University Press, 1995. 276～277