摘要
As an important electromagnetic Held in experiment,Gaussian beams have non-vanishing longitudinal electric and magnetic components that generate significant energy fluxes on transverse directions.We focus on the transverse energy flux and derive the theoretical propagation properties.Unlike the longitudinal energy flux,the transverse energy flux has many unique physical behaviors,such as the odd symmetry on propagation,slower decay rate on resonant condition.By means of the characteristics of transverse energy Bux,it is feasible to find the suitable regions where the information of coherent lights could be extracted exactly.With the typical laser parameters,we simulate the energy fluxes on receiver surface and analyze the corresponding distribution for the coherent light beams.Especially for coherent lights,the transverse energy Bux on the y-z plane with x=0 and x-z plane with y=0,contains pure coherent information.Meanwhile,in the transverse distance|y|<2 W0(W0 is the waist radius)and|x|<W0/3 the coherent information could also be extracted appropriately.
作者
向菲
张林
陈涛
仲元红
李瑾
Fei Xiang;Lin Zhang;Tao Chen;Yuan-Hong Zhong;Jin Li(State Grid Chongqing Electric Power Research Institute,Chongqing 401123,China;State Grid Chongqing Electric Power Company,Chongqing 404000,China;School of Microelectronics and Communication Engineering,Chongqing University,Chongqing 400044,China;College of Physics Chongqing University,Chongqing 401331,China)
基金
Supported by the National Natural Science Foundation of China(Grant No.11873001)
the Natural Science Foundation of Chongqing(Grant No.cstc2018jcyjAX0767)。