本文選題：激光通信　切入點(diǎn)：高光能利用率　出處：《光子學(xué)報(bào)》2017年07期

【摘要】：提出一種增加軸錐鏡對(duì)的同軸反射式光學(xué)結(jié)構(gòu)激光發(fā)射天線方案,通過(guò)對(duì)入射光束的光強(qiáng)重新排布,降低同軸反射式結(jié)構(gòu)固有的中心遮攔造成的能量損失,提高光能利用率.運(yùn)用衍射光學(xué)原理分析并模擬了單色高斯光束經(jīng)過(guò)軸錐鏡對(duì)后傳播至天線光闌平面處的光場(chǎng)分布,比較了普通同軸反射式天線和高光能利用率天線在不同入射光束腰半徑、不同線遮攔比下的發(fā)射光能利用率.結(jié)果表明:高光能利用率天線在線遮攔比0.1和0.25的情況下,通過(guò)合理調(diào)整入射光束腰大小,光能利用率分別可達(dá)到99%和96%以上,遠(yuǎn)高于傳統(tǒng)的同軸反射式天線.分析了高光能利用率天線發(fā)射光束的遠(yuǎn)場(chǎng)光強(qiáng)分布,發(fā)現(xiàn)其進(jìn)入接收天線口徑內(nèi)的光場(chǎng)可近似為平頂分布.
[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.
【作者單位】： 長(zhǎng)春理工大學(xué)光電測(cè)控與光信息傳輸技術(shù)教育部重點(diǎn)實(shí)驗(yàn)室;長(zhǎng)春理工大學(xué)光電工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(Nos.60907020,91338116,91438204) 吉林省教育廳基金(No.[2016]369) 長(zhǎng)春理工大學(xué)自然科學(xué)青年基金(No.WQNJJ-2016-15)資助~~
【分類號(hào)】：TN929.1
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本文編號(hào)：1690482