Frequency doubling by nonlinearity of TiO2 nanomaterial

Abstract

We reported titanium dioxide nanoparticles solution (TiO 2 NPS) preparation by the sol-gel method. The produced NPS was employed as a liquid crystal to generate the second harmonic (SH) of one part of the pumping Nd: YAG laser at different pumping intensities. The remaining part of the pumping laser was focused on a stander nonlinear material (NPP63) to produce another SH pulse (to be used as a reference). Then the two SH pulses (one from TiO 2 and one from NPP63) were used to calculate the nonlinear coefficient (β) of the synthesized TiO 2 Nano solution. The suggested method represents a simple and inexpensive setup for calculation β by excluding the very expensive femtosecond laser used in previous studies. The results reveal that β for the prepared TiO 2 nanoparticles is very large (5.3Â10 À26 esu).

Synthesis AgO Nanoparticles by Nd:Yag Laser with Different Pulse Energies

“…The laser ablation process is affecting strongly with characteristics of a laser beam used (number of pulses, wavelength, pulse duration, and energy) 4 -7 ablation rate direct proportionality with laser pulses number that influenced in the case of dielectrics, semiconductors, and single metals 2,[8][9][10] . The pulse laser ablation in liquids used for nanomaterial synthesis has many unique advantages compared with other synthesis techniques like synthesis Lu and Sm sesquioxide nanoparticles by using Nd:Yag laser-irradiated for 30 min, spherical particles form with particle size 62.35-75.02 nm was formed 11 .…”

“…Laser ablation process is based on many applications like modification surface of materials, nanoparticles formation, and deposition of thin film, chemical analysis, and micromachining. Laser ablation process relies on ablated material properties (optical and thermal) as well as laser parameters 9,[15][16][17][18][19][20][21] .…”