摘要
通过分步相位屏法计算模拟了Ince-Gaussian(IG)光束在海洋湍流环境中的传输特性。研究了传输距离、模式阶数和IG光束的椭圆参数对传输性能的影响。分析了传输过程中光束的光强分布、束宽、质心漂移和闪烁因子参数的变化。研究发现:在海洋湍流传输中,随着传输距离的增加,IG光束的光斑会扩散,在传输距离为100 m处,椭圆参数小于2的IG光束会转变为空心光束;海洋湍流对IG光束的传输具有展宽效应,质心漂移标准差随模式椭圆参数的增大逐渐增大;闪烁因子随IG模式的阶数增大而增大,随IG模式椭圆参数的增大先逐渐降低然后趋于平缓。研究结果对IG光束的海洋应用研究具有指导意义。
The propagation characteristics of Ince-Gaussian(IG)beams in turbulent ocean environment are calculated and simulated by using step-by-step phase screen method.The effects of propagation distance,mode order and ellipticity parameter of IG beam on propagation performance are studied.The changes of beam intensity distribution,beam width,spot centroid wander and scintillation index parameters during transmission are analyzed.It is found that in the oceanic turbulence propagation,with the increase of propagation distance,the spot of IG beam will diffuse.At the propagation distance of 100 m,the IG beam with ellipticity parameter less than 2 will be transformed into a hollow beam.Secondly,the oceanic turbulence has a broadening effect on IG beam during propagation,and the standard deviation of spot centroid wander gradually increases with the increase of mode ellipticity parameter.In addition,the scintillation index increases with the increase of the order of IG mode.With the increase of ellipticity parameter of IG mode,the scintillation index first decreases and then tends to be flat.The research results have guiding significance for the marine application of IG beam.
作者
张凤
张明明
胡友友
窦健泰
刘俊
Zhang Feng;Zhang Mingming;Hu Youyou;Dou Jiantai;Liu Jun(School of Science,Jiangsu University of Science and Technology,Zhenjiang,Jiangsu 212100,China)
出处
《应用激光》
CSCD
北大核心
2022年第11期92-98,共7页
Applied Laser
基金
国家自然科学基金青年基金(12104189、12104190)
江苏省自然科学基金青年基金(BK20190953、BK20210874)
江苏省产学研合作项目(BY2020680)
江苏省高等学校自然科学研究面上项目(20KJB140008)
浙江省光电探测材料及器件重点实验室开放基金(KLPMD2105)
镇江市重点研发计划-产业前瞻与共性关键技术(GY2020003)。
