The optical emission spectrum of produced plasma was studied using pulse laser, where the effect of laser energy at a wavelength of 1064nm  was studied on lead oxide that produced by optical emission spectroscopy at different laser energy from 500 to 900 mJ. It was found that the intensity for Pb I and Pb II lines increase with increasing laser energy, but with different ratio, as a result increasing the excitation rate with increasing the number of falling photons. The wave length was recorded at highest laser Energy produced from Pb II which was equal to 666.02 nm. It can be seen that The height of peaks increase with increasing laser energy due to the effect of increasing the Electrical field induced by increasing Electrons density and the temperature of electron (Te) and electron density (ne) increase from 1.222×1018 cm-3 to 1.444×1018 cm-3 with increasing laser energy from  500 to 900 mJ respectively as a result of increasing number of falling photons which lead to increase in the electron density.

In this research, pulse laser deposition Nd:YAG has 1064 nm wavelength, with a number of 400 shoots, was used to produce (PbO:CdO) thin films with different ratio (0.1, 0.3 , 0.5, 0.7 and 0.9) atom at room temperature under vacuum. The films were examined by UV-Visible spectroscopy ,Xray diffraction and Atomic force microscope to study the effect of film ratio on it properties. It was found that the absorption decrease with increasing CdO ratio from 3.5 to 0.7 at 600 nm, while the energy gap increase from 2.6 to 2.9 eV with it. Electrical properties show enhance the films conductivity with increasing CdO ratio and convert from P-type to n-type at 0.5 PbO:CdO thin films ratio.

The optical emission spectrum of produced plasma was studied using pulse laser, where the effect of laser energy at a wavelength of 1064nm  was studied on lead oxide that produced by optical emission spectroscopy at different laser energy from 500 to 900 mJ. It was found that the intensity for Pb I and Pb II lines increase with increasing laser energy, but with different ratio, as a result increasing the excitation rate with increasing the number of falling photons. The wave length was recorded at highest laser Energy produced from Pb II which was equal to 666.02 nm. It can be seen that The height of peaks increase with increasing laser energy due to the effect of increasing the Electrical field induced by increasing Electrons density and the temperature of electron (Te) and electron density (ne) increase from 1.222×1018 cm-3 to 1.444×1018 cm-3 with increasing laser energy from  500 to 900 mJ respectively as a result of increasing number of falling photons which lead to increase in the electron density.   http://dx.doi.org/10.25130/tjps.24.2019.033 

In this research, aluminum nanoparticles (AL NPs) were prepared using the Nd-YAG pulsed laser ablation method with a wavelength of 1064 nm with a frequency of 6 Hz and a fixed pulse of 250 pulses. A pure aluminum metal target was immersed in ethanol and aluminum nanoparticles removed using five different laser energies ranging from (400-800) mj and the effect of the laser energy difference on the optical properties of aluminum nanoparticles was studied. The optical properties were studied using UV spectroscopy for both the absorption and transmittance spectrum and according to the change of laser power, and a change in the absorption behavior was observed. The transmittance changes with wavelength and laser energy and the best pulsed laser energy is known to ablate these particles.