Thrust generation through low-power laser-metal interaction for space propulsion applications
Thrust generation through low-power laser-metal interaction for space propulsion applications
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DOI：
10.1016/j.vacuum.2012.03.031
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发表时间：
2013-02-01
期刊：
影响因子：
4
通讯作者：
Funaki, Ikkoh
中科院分区：
文献类型：
--
作者：
Horisawa, Hideyuki;Sumida, Sota;Funaki, Ikkoh
通过低功率连续波激光与铝箔的相互作用，观察到微牛顿推力的产生，而目标表面没有明显的烧蚀。为了评估推力特性，研制了一种能够测量微牛顿级推力水平的扭力平衡推力台。以厚度为12.5微米的铝箔靶为例，当激光功率为20 W，即0.75 μ N/W时，最大推力水平为15微牛顿。研究还发现，即使在低强度水平下，照射在目标上的激光强度或单位面积的激光功率对推力的控制也具有重要意义。(C) 2012 Elsevier Ltd.版权所有。
The micro-Newton thrust generation was observed through low-power continuous wave laser and aluminum foil interaction without any remarkable ablation of the target surface. To evaluate the thrust characteristics, a torsion balance thrust stand capable for the measurement of the thrust level down to micro-Newton ranges was developed. In the case of an aluminum foil target with 12.5 micrometer thickness, the maximum thrust level was 15 micro-Newtons when the laser power was 20 W, or about 0.75 mu N/W. It was also found that the laser intensity, or laser power per unit area, irradiated on the target was significantly important on the control of the thrust even under the low-intensity level. (C) 2012 Elsevier Ltd. All rights reserved.