Luneburg lens回射器对高斯光反射特性的仿真研究  

Simulation Study of Luneburg Lens Retroreflector to Gaussian Beam Reflection Characteristics

作　　者：王军傲 杨雁南[1] Wang Jun’ao;Yang Yannan(College of Science,Nanjing University of Aeronautics and Astronautics,Nanjing,Jiangsu 211106,China)

机构地区：[1]南京航空航天大学理学院,江苏南京211106

出　　处：《光学学报》2021年第18期95-99,共5页Acta Optica Sinica

基　　金：国家自然科学基金(51577091)。

摘　　要：针对由平面或球面反射镜构成的传统激光谐振腔调节要求精度高、允许转动失调角度小的缺点,将Luneburg lens与球形全反射面组合作为光束回射器件,分别对高斯光束在不同入射角,且中心轴线与Luneburg lens光轴不同距离情况下回射器的反射特性进行数值模拟。结果表明:即使在Luneburg lens线度小至光波波长的数十分之一情况下,该回射器对分布在角向、横向上较大范围内的入射高斯光束仍均能实现方向性好、反射能量稳定的逆向反射。因此,将其作为激光器的光学谐振腔镜理论上可行,且具有调节要求低,腔长横向、角向移动范围大等优点,且该回射器的尺度小,易于实现谐振腔镜的小型化。Aiming at the shortcomings of traditional laser resonator composed of flat or spherical mirrors that require high precision adjustment and allow a small rotation misalignment angle,the Luneburg lens and spherical total reflection surface are combined as beam retroreflective devices.We performed numerical simulations on the reflection characteristics of the retroreflector under different incident angles of Gaussian beams and different distances between the central axis and the optical axis of the Luneburg lens.The results demonstrate that even when the linearity is as small as one-tenth of the wavelength of the light wave,the reflectors can still achieve good directivity and retroreflection with stable reflected amplitude for incident Gaussian beam distributed in a large range in the angular and lateral direction.Therefore,it is theoretically feasible to use it as a laser optical resonator mirror,and it has the advantages of low adjustment requirements,large cavity length lateral,and angular movement range.And the size of the retroreflector is small,which is easy to realize the miniaturization of the resonator mirror.

关 键 词：成像系统 Luneburg lens 逆向反射 高斯光束 激光谐振腔 

分 类 号：TN249[电子电信—物理电子学]