Nanotwist of aluminum with irradiation of a single optical vortex pulse
Nanotwist of aluminum with irradiation of a single optical vortex pulse
复制标题
DOI：
10.1364/osac.417444
复制
发表时间：
2021-02
期刊：
影响因子：
--
通讯作者：
Ablimit Ablez;K. Toyoda;K. Miyamoto;T. Omatsu
中科院分区：
文献类型：
--
作者：
Ablimit Ablez;K. Toyoda;K. Miyamoto;T. Omatsu
由于轨道角动量（OAM）转移效应，用单个皮秒光涡旋脉冲照射铝（Al），在烧蚀阈值附近具有相对较低的能量，证明了铝（Al）的纳米级扭曲。扭转针很容易转变为一个微尺度的非扭转针，只有几个重叠的光涡旋脉冲的沉积。用具有毫焦耳级脉冲能量的皮秒/纳秒光涡旋脉冲照射也使得能够制造微米级非扭转针。Al的这种纳米/微米结构化为OAM与材料之间的相互作用提供了新的物理见解，并且它也为紫外等离子体器件提供了全新的纳米/微米制造技术。
A nanoscale twisting of aluminum (Al) is demonstrated by irradiation with a single picosecond optical vortex pulse with relatively low energy near the ablation threshold, due to the orbital angular momentum (OAM) transfer effects. The twisting needle is easily transformed into a microscale non-twisting needle by only the deposition of several overlaid optical vortex pulses. Irradiation with a picosecond/nanosecond optical vortex pulse with a millijoule level pulse energy also enabled the fabrication of a microscale non-twisting needle. Such nano/microstructuring of Al provides a new physical insight for the interaction between OAM and materials, and it also offers an entirely new nano/microfabrication technique towards ultraviolet plasmonic devices.