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Modification of Implanted Metal Nanoparticles in the Dielectrics byHigh-Power Laser Pulses

机译:高功率激光脉冲对介电体中注入的金属纳米粒子的改性

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The present review concentrates on the excimer laser pulse laser modification of metal nanoparticles synthesized by ion implantation in amorphous dielectrics such as silicate glasses. One of the main features of composite samples prepared by the low ion implantation is the growth of metal particles with a very wide size distribution in the depth from the irradiated substrate surface. Pulsed laser irradiation makes it possible to modify this composite layer, improving the uniformity in the size distribution of the nanoparticles. Changes induced by pulsed laser exposure suggest there are both reductions in average size of the silver nanoparticles, and some long range dissolution of silver in the glass. This is particularly promising for the development of the technology of obtaining nonlinear optical materials. To control the parameters of the obtained layers a method based on an analysis of the optical reflection spectra measured on the side of the implanted and rear surfaces of glass is applied. Also, the factors influencing the experiment are discussed and the optical extinction spectra of the nanoparticles in the glass are modeled using the Mie theory.
机译:本综述集中于准分子激光脉冲激光修饰金属纳米颗粒,该金属纳米颗粒通过离子注入在诸如硅酸盐玻璃的非晶质电介质中合成。通过低离子注入制备的复合样品的主要特征之一是金属颗粒的生长,该金属颗粒在距被辐照基材表面的深度上具有非常宽的尺寸分布。脉冲激光辐照使改性该复合层成为可能,从而改善了纳米颗粒尺寸分布的均匀性。脉冲激光照射引起的变化表明,银纳米颗粒的平均尺寸减小,并且银在玻璃中有一些长距离溶解。这对于获得非线性光学材料的技术的发展特别有希望。为了控制所获得的层的参数,采用了一种基于对在玻璃的注入侧和后表面侧上测量的光反射光谱进行分析的方法。此外,讨论了影响实验的因素,并使用米氏理论对玻璃中纳米颗粒的消光光谱进行了建模。

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