Metal nanoparticle formation using laser ablation of targets in water by picosecond pulses is a well-developed process. Here we demonstrate how the salt and sugar being dissolved in water differently affect the spectral characteristics of the absorbance of the suspensions produced during ablation of silver and gold targets. We demonstrate the disappearance of the surface plasmon resonances of Ag and Au nanoparticles in the salt-containing solutions. The presence of salt does not allow for maintaining the synthesis of nanoparticles during ablation of metals contrary to the sugar-containing solution. Our nonlinear optical studies show that the saturable absorption observed in the nanoparticles-containing suspensions produced during laser ablation of silver and gold in distilled water and sugar-containing water entirely disappears in the case of the suspension produced during the ablation of these metals in salt-containing solution.

通过皮秒脉冲激光烧蚀水中的目标来形成金属纳米颗粒是一种成熟的工艺。在这里，我们演示了溶解在水中的盐和糖如何不同地影响银和金靶材烧蚀期间产生的悬浮液的吸光度的光谱特征。我们证明了含盐溶液中银和金纳米颗粒的表面等离子体共振消失。与含糖溶液相反，盐的存在不允许在金属消融过程中维持纳米颗粒的合成。我们的非线性光学研究表明，在蒸馏水和含糖水中激光烧蚀银和金过程中产生的含纳米颗粒悬浮液中观察到的饱和吸收在盐中烧蚀这些金属过程中产生的悬浮液中完全消失。含有溶液。