基于轴锥镜对的高光能利用率激光通信天线性能分析

发布时间：2018-03-31 11:13

  本文选题：激光通信　切入点：高光能利用率　出处：《光子学报》2017年07期

【摘要】：提出一种增加轴锥镜对的同轴反射式光学结构激光发射天线方案,通过对入射光束的光强重新排布,降低同轴反射式结构固有的中心遮拦造成的能量损失,提高光能利用率.运用衍射光学原理分析并模拟了单色高斯光束经过轴锥镜对后传播至天线光阑平面处的光场分布,比较了普通同轴反射式天线和高光能利用率天线在不同入射光束腰半径、不同线遮拦比下的发射光能利用率.结果表明:高光能利用率天线在线遮拦比0.1和0.25的情况下,通过合理调整入射光束腰大小,光能利用率分别可达到99%和96%以上,远高于传统的同轴反射式天线.分析了高光能利用率天线发射光束的远场光强分布,发现其进入接收天线口径内的光场可近似为平顶分布.
[Abstract]:This paper presents a scheme of laser emitting antenna with coaxial reflection optical structure which increases the pair of axial cones. By rearranging the light intensity of the incident beam, the energy loss caused by the central blocking inherent in the coaxial reflection structure is reduced, and the utilization ratio of light energy is improved.The light field distribution of monochromatic Gao Si beam propagating through an axial cone mirror to the aperture plane of the antenna is analyzed and simulated by using the principle of diffractive optics. The beam waist radii of common coaxial reflector antenna and high light energy efficiency antenna are compared.The utilization ratio of emission light energy under different line occlusion ratio.The results show that the optical energy utilization ratio of the antenna is over 99% and 96%, which is much higher than that of the traditional coaxial reflector antenna, when the ratio of optical energy utilization is 0.1 and 0.25, and the waist size of the incident beam is adjusted reasonably.The far-field intensity distribution of the beam emitted by the high-light energy utilization antenna is analyzed. It is found that the light field entering the aperture of the receiving antenna can be approximately flat-top distribution.
【作者单位】： 长春理工大学光电测控与光信息传输技术教育部重点实验室;长春理工大学光电工程学院;
【基金】：国家自然科学基金(Nos.60907020,91338116,91438204) 吉林省教育厅基金(No.[2016]369) 长春理工大学自然科学青年基金(No.WQNJJ-2016-15)资助~~
【分类号】：TN929.1
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本文编号：1690482