Abstract
One of the most important industrial applications of lasers is the treatment of materials. In this work pulsed Nd:YAG laser of wavelength (1064 nm) was used to precipitate the prepared solution of CuO nanoparticles in the form of thin films using energies (300, 400, 500 and 600 mJ) at a distance (10 cm) and for an irradiation period (20 s) for each energy. The optical properties of the material were examined, which include transmittance, absorbance and some other optical constants, in addition to calculating the optical energy gap and knowing the effect of increasing the laser energy on its values.
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