摘要
根据广义惠更斯-菲涅尔原理,建立了非均匀辛格相关蓝绿激光波束在海洋湍流中的传输模型。基于交叉谱密度函数,讨论了不同传播距离下波束光强变化。数值计算了波束光强和光强最大值横向偏移受海洋湍流参数的影响。结果表明,传播距离和海洋湍流参数对非均匀辛格相关蓝绿激光波束的光强自聚焦现象有一定影响。当传播距离一定时,温度均方耗散率对光强自聚焦的影响大于湍流动能耗散率和温度盐度波动相对强度。
The propagation model of non-uniformly Sinc-correlated blue-green laser beam in oceanic turbulence was developed according to generalized Huygens-Fresnel principles.Based on the cross-spectral density,intensity variations in different propagation distances were discussed.When the oceanic turbulence parameters were varied,intensity and lateral shifted intensity maximum were numerically simulated.The results show that the propagation distance and ocean turbulence parameters have a certain influence on the intensity self-focusing effect of the nonuniformly Sinc-correlated blue-green laser beam.When the propagation distance is certain,the effect of the rate of dissipation of mean-square temperature on the intensity self-focusing is greater than the rate of dissipation of kinetic energy and the relative strength of temperature and salinity fluctuations.
作者
王明军
张佳琳
王姣
Wang Mingjun;Zhang Jialin;Wang Jiao(School of Automation and Information Engineering,Xi’an University of Technology,Xi'an 710048,China;Shaanxi Civil-Military Integration Key Laboratory of Intelligence Collaborative Networks,Xi'an 71004&China)
出处
《红外与激光工程》
EI
CSCD
北大核心
2020年第6期189-196,共8页
Infrared and Laser Engineering
基金
国家自然科学基金(61771385)
陕西省杰出青年科学基金(2020JC-42)
固体激光技术重点实验室开放基金(6142404180301)
西安市高校人才服务企业工程项目(GXYD14.26)。
关键词
海洋湍流
非均匀辛格相关波束
光强
光强最大值横向偏移
oceanic turbulence
non-uniformly Sinc-correlated beam
intensity
lateral shifted intensity
