Research on applications of rectangular beam in micro laser propulsion
Research on applications of rectangular beam in micro laser propulsion
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矩形光束在微激光推进中的应用研究
DOI：
10.1016/j.apsusc.2014.02.107
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发表时间：
2014-05-15
影响因子：
6.7
通讯作者：
Tang, Z. P.
中科院分区：
文献类型：
--
作者：
Jiao, L.;Cai, J.;Tang, Z. P.
微激光推进是一项具有广阔发展前景的新技术。为了进一步减小推力器的质量和体积，将激光棒引入到微激光推进领域。利用椭圆透镜对二极管光进行快轴和慢轴压缩，得到了一种新的220 × 20 μ m的808 nm矩形光束。研究了激光功率、能量和双基推进剂包覆层厚度对推进性能的影响。双基推进剂在静态和动态工况下的推进性能表现出不同的特点。与圆波束相比，新波束更有利于产生更高的冲量。DBP的烧蚀效率在短激光持续时间内表现出更好的性能。功率密度和能量密度的组合决定了激光推进的性能。新的矩形光束适用于毫秒级微激光推进。(C)2014爱思唯尔有限公司版权所有。
Micro laser propulsion is a new technology with brilliant future. In order to reduce the thruster mass and volume further, laser bar is introduced into the micro laser propulsion field. A new kind of 220 x 20 mu m rectangular beam of 808 nm was obtained by oval lens compressing the light of diode at fast axes and slow axes. The effect of laser power, energy and coating thickness of double base propellant on propulsion performance was studied. Propulsion performance of double base propellant under static and dynamic mode shows some different characters. Compared to round beam, the new beam prefers to produce higher impulse. Ablation efficiency of DBP shows better performance in short laser duration. The combination of power density and energy density decides the laser propulsion performance. The new rectangular beam is appropriate for millisecond micro-laser propulsion. (C) 2014 Elsevier B.V. All rights reserved.