有限能量艾里光束的传输演化特性  

Propagation and Evolution Properties of Finite Energy Airy Beams

作　　者：李怡[1] 楚兴春[1] 唐翰玲 刘张博[2] Li Yi;Chu Xingchun;Tang Hanling;Liu Zhangbo(Information and Navigation College,Air Force Enginering University,Xi’an 710077,Shaanxi,China;Xi’an Satellite Control Center,Xi’an 710043,Shaanxi,China)

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077 [2]西安卫星测控中心,陕西西安710043

出　　处：《激光与光电子学进展》2022年第13期367-371,共5页Laser & Optoelectronics Progress

摘　　要：基于惠更斯-菲涅耳衍射积分,对指数衰减、空间截断、频域截断和恒等振幅截断等方法产生的有限能量艾里光束的传输演化特性进行了比较分析,讨论了横向尺度因子和截断孔径宽度对其无衍射传输距离和横向加速特性的影响。研究结果表明:当截断孔径宽度相同时,增大横向尺度因子,几种有限能量艾里光束的无衍射传输距离和横向加速偏移量均增大;当横向尺度因子相同时,几种有限能量艾里光束的无衍射传输距离均随截断孔径宽度的增大而增加;当截断孔径宽度和横向尺度因子相同时,频域截断有限能量艾里光束的无衍射传输距离最短,指数衰减和空间截断有限能量艾里光束的较长,而恒等振幅有限能量艾里光束的最长。该结果对于拓展有限能量艾里光束在长距离传输方面的应用具有一定的意义。The propagation and evolution properties of the finite energy Airy beams generated by exponential attenuation,spatial truncation,frequency truncation,and constant amplitude methods are compared and analyzed using the Huygens-Fresnel diffraction integral.Further,the effects of a transverse scaling factor and aperture truncated width on nondiffracting propagation distance and transverse acceleration are discussed.When the aperture truncated width is constant,the non-diffracting propagation distance and lateral acceleration offset of all types of finite energy Airy beams increase as the transverse scaling factor increases.When the transverse scale factor is constant,the non-diffracting propagation distance of all types of finite energy Airy beams increases as the aperture truncated width increases.When the aperture truncated width and transverse scaling factor are constant,the non-diffracting propagation distance of frequency truncation Airy beam is the shortest,that of the exponential attenuation and spatial truncation Airy beams are longer,and that of the constant amplitude Airy beam is the longest.The results have certain significance for expanding the application of finite energy Airy beams in the long-distance propagation.

关 键 词：物理光学 艾里光束 有限能量 截断孔径宽度 横向尺度因子 传输演化特性 

分 类 号：O439[机械工程—光学工程]