Cu₂O nanoparticles were synthesized by pulsed laser ablation (Nd:YAG laser, 7 ns, and 1064 nm) of Cu plate immersed in liquid media from ultra-pure water, and its particle sizes were varied by changing the repetition rates between pulses to be useful for optoelectronic applications. The prepared colloidal suspension nanoparticles were characterized based on different physical process as the diffraction of X-ray laser beam, the electronic transition of UV–visible light source, or plasma emission from laser-matter interaction by the techniques of X-ray diffraction, UV–visible spectroscopy, and laser-induced breakdown spectroscopy, respectively. These techniques showed decreasing in the average particle sizes as increasing in the repetition rate of a pulsed laser. After that, the optical nonlinearity of the prepared samples was investigated by the Z-scan technique to inform the nonlinear parameters as 2nd order nonlinear absorption coefficient (β), 3rd order nonlinear susceptibility (X³), and the nonlinear reflective index (n₂), optical limiting property and its proposed mechanism. The prepared nanostructured materials of Cu₂O materials have a good optical limiter material with a limiting threshold value around 0.7 GW/cm² and a damage threshold around 1.4 GW/cm². These results confirmed that the saturable absorption process was carried by two-photon absorption, especially when the repetition rate of the used pulsed laser during the laser ablation process.

铜₂通过脉冲激光烧蚀（Nd:YAG 激光，7 ns 和 1064 nm）将铜板浸入超纯水的液体介质中合成了 O 纳米粒子，并通过改变脉冲之间的重复率来改变其粒径以供使用用于光电应用。制备的胶体悬浮纳米粒子基于不同的物理过程，如 X 射线激光束的衍射、紫外-可见光源的电子跃迁或激光与物质相互作用的等离子体发射，通过 X 射线衍射、紫外-分别为可见光谱和激光诱导击穿光谱。这些技术表明，随着脉冲激光重复频率的增加，平均粒径减小。在那之后，³ )、非线性反射率(n ₂ )、光限幅特性及其提出的机理。所制备的Cu ₂ O材料纳米结构材料具有良好的光学限制材料，其限制阈值在0.7 GW/cm ^{2 左右}，损伤阈值在1.4 GW/cm ^{2 左右}。这些结果证实了可饱和吸收过程是由双光子吸收进行的，特别是在激光烧蚀过程中使用脉冲激光的重复率时。