Antimonene nanosheets are obtained by laser irradiation of antimony powder in isopropyl alcohol and the thicknesses of antimonene nanosheets are around 4–12 nm. The nonlinear optical responses of the samples are probed by a z-scan measurement employing a nanosecond laser pulse. The competition between saturable absorption and reverse saturable absorption at 532 nm is confirmed in the dispersion of antimonene nanosheets. The optical limiting (OL) onset fluence (FON) and the optical limiting threshold (FOL) of the antimonene are 0.162 J/cm2 and 1.37 J/cm2, respectively. Our finding not only provides an approach feasible for the fabrication of uniform antimonene nanosheets in ambient conditions but also manifests that antimonene has excellent optical responses making it promising for OL device applications.

中文翻译：

---

激光辐照技术制备的锑烯纳米片具有出色的非线性吸收响应

锑烯纳米片是通过在异丙醇中激光照射锑粉获得的，锑烯纳米片的厚度约为 4-12 nm。通过采用纳秒激光脉冲的 z 扫描测量来探测样品的非线性光学响应。在锑烯纳米片的分散中证实了 532 nm 处可饱和吸收和反饱和吸收之间的竞争。锑烯的光限 (OL) 起始注量 (FON) 和光限阈值 (FOL) 分别为 0.162 J/cm2 和 1.37 J/cm2。我们的发现不仅提供了一种在环境条件下制备均匀锑烯纳米片的可行方法，而且还表明锑烯具有出色的光学响应，使其有望用于 OL 器件应用。