%0 Journal Article
%T Comparative study of partially coherent vortex beam propagations through atmospheric turbulence along a uplink path and a downlink path<br>部分相干涡旋光束通过大气湍流上行和下行传输的比较研究
%A 李晋红
%A 吕百达
%J 物理学报
%D 2011
%I 
%X Based on the extended Huygens-Fresnel principle, the propagations of a partially coherent vortex beam through atmospheric turbulence along an uplink path and a downlink path are studied, where the Gaussian Schell-model (GSM) vortex beam is taken as a typical example of partially coherent vortex beam. The analytical expressions for the average intensity, rms width and cross-spectral density function of GSM vortex beam propagating through atmospheric turbulence along a slant path are derived and used to study the influence of atmospheric turbulence along an uplink path and a downlink path on GSM vortex beam propagation and on coherence vortex. It is shown that under the same conditions the influence of atmospheric turbulence along a downlink path on GSM vortex beam propagation is smaller than that along a uplink path, and the conservation distance of the topological charge of GSM vortex beam along a downlink path is longer than that along a uplink path. The results are explained in physics.
%K partially coherent vortex beam
%K coherence vortex
%K atmospheric turbulence
%K propagation along a uplink path and a downlink path<br>部分相干涡旋光束
%K 相干涡旋
%K 大气湍流
%K 上行和下行传输
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=27C14E609A3E452C568C2699418D7D04&yid=9377ED8094509821&vid=BFE7933E5EEA150D&iid=DF92D298D3FF1E6E&sid=BE3778782E7FBEC6&eid=BE3778782E7FBEC6&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=24