Dynamic modelling and simulation of laser ablation of titanium, silicon and tungesten elements by pulsed Nd: YAG laser in a distilled water

Abstract

Pulsed laser ablation in liquid solution is a fast, safe and clean method for producing colloidal nanoparticles with different structural and optical characteristics. However, the other synthesis methods require high temperatures, long reaction times and multi-step chemical synthetic procedures. In this paper, the simulation of nanosecond pulsed laser ablation process and effective parameters on the Titanium, Silicon, and Tungsten elements in distilled water environment at the height of 1 cm from the surface of the metal is investigated. For this purpose, the pulsed Nd:YAG laser with nanosecond time duration, wavelengths of 1064nm and 532nm, a focal diameter of 200 mm is used. The simulation is based on considering the effects of the water environment and number of laser pulses. The distribution of temperature on the metal surface and the threshold fluence is determined by two-fluid heat transfer model using Comsol Multi physic Package.

Keywords

• laser ablation
• titanium
• silicon
• tungesten
• nd:yag laser