Influence of laser beam profile on morphology and optical properties of silicon nanoparticles formed by laser ablation in liquid.

ABSTRACT: In this study, silicon nanoparticles (NPs) were produced by pulsed laser ablation in a liquid, aiming to investigate the influence of a laser beam profile on the properties of the resultant NPs. Morphology, inner structure, and phase composition of the formed NPs were characterized by means of ultraviolet-visible spectroscopy, high-resolution transmission electron microscopy, and Raman and photoluminescence spectroscopies, and the correlation of the NP properties with the laser beam profile was studied. Three different beam profiles were selected, namely, a Bessel beam produced using an axicon, an annular profile formed using a combination of an axicon and a converging lens, and a Gaussian beam focused on the surface of a Si target using the same converging lens. In all the schemes, a nano

SUBMITTER: Tarasenka N 

PROVIDER: S-EPMC12415900 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature