中国物理B ›› 2011, Vol. 20 ›› Issue (9): 94203-094203.doi: 10.1088/1674-1056/20/9/094203
陈光明, 华黎闽, 林惠川, 蒲继雄
Chen Guang-Ming(陈光明)a)b), Hua Li-Ming(华黎闽)a), Lin Hui-Chuan(林惠川)a), and Pu Ji-Xiong(蒲继雄)a)†
摘要: We experimentally study the generation of a partially coherent non-diffractive beam by focusing a partially coherent vortex beam with an axicon. The investigation results show that when the partially coherent vortex beam is focused by the axicon, the beam is transferred into a partially coherent higher-order non-diffractive beam. In the non-diffractive zone, the transverse intensity distribution of the partially coherent higher-order non-diffractive beam is invariant during propagation. In addition, the range of the non-diffractive zone is related to the coherence of the partially coherent vortex beam. The poorer the coherence of the partially coherent vortex beam, the shorter the range of the non-diffractive zone.
中图分类号: (Diffraction and scattering)