Three kinds of Al flyer plates with different nanostructured absorption layers were in situ prepared by a direct laser writing technology to improve the energy conversion efficiency in a laser-driven flyer assembly. Microstructures, light absorption, and flyer velocity in the acceleration chamber were investigated. The reflectance for the flyers at 1064-nm wavelength can be reduced from 81.3 to 9.8% by the nanostructured absorption layer. The terminal velocity of a 50-μm-thick Al flyer irradiated by a 60-mJ laser pulse is 831 m/s, while the velocity of the flyer with an in situ-fabricated nano-absorption layer reaches up to 1113 m/s at the same condition. Resultantly, the energy conversion efficiency of the flyer with a nanostructure absorption layer can reach as high as 1.99 times that of the Al flyer. Therefore, the nanostructured absorption layer in situ prepared on the surface of a flyer provides a new method to significantly improve the energy conversion efficiency of a laser-driven flyer.

通过直接激光写入技术原位制备了三种具有不同纳米结构吸收层的铝制飞板，以提高激光驱动飞板组件的能量转换效率。研究了加速室内的微结构，光吸收和飞行器速度。纳米结构吸收层可以将传单在1064 nm波长的反射率从81.3降低到9.8％。60 mJ激光脉冲辐照的厚度为50μm的Al飞行器的终极速度为831 m / s，而具有原位制造的纳米吸收层的飞行器的速度在30℃时达到1113 m / s。同样的条件。结果，具有纳米结构吸收层的飞行物的能量转换效率可以达到铝飞行物的能量转换效率的1.99倍。因此，