Experimental investigation on partially coherent higher-order non-diffractive beams  

作　　者：陈光明 华黎闽 林惠川 蒲继雄 

机构地区：[1]College of Information Science & Engineering,Huaqiao University [2]College of Fujian Education

出　　处：《Chinese Physics B》2011年第9期204-210,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No.60977068);the Foundations of the State Key Laboratory for Transient Optical and Photonic Technology of Chinese Academy of Sciences (Grant No.SKL ST200912)

摘　　要：We experimentally study the generation of a partially coherent non-diffractive beam by focusing a partially coherent vortex beam with an axieon. 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.We experimentally study the generation of a partially coherent non-diffractive beam by focusing a partially coherent vortex beam with an axieon. 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.

关 键 词：physical optics higher-order non-diffractive Bessel beam AXICON partially coherence 

分 类 号：O431.2[机械工程—光学工程]