Second Harmonic Generation Efficiency of Copper Nanoparticles Synthesized via Pulsed Laser Ablation in Liquid (PLAL)

Zahraa Sahib Shanon

Abstract: This study investigates the second harmonic generation (SHG) efficiency of copper nanoparticles synthesized through pulsed laser ablation in liquid (PLAL) using a 1064 nm Nd:YAG laser. The nanoparticles, formed in deionized water, exhibited an average size of 32-45 nm and were characterized via SEM and UV-Vis spectroscopy, revealing a plasmonic resonance peak at 574 nm. The nonlinear optical response was assessed by rotating the nanoparticle solution and measuring SHG intensity at varying angles and laser powers (50 and 85 mW). The results demonstrated peak SHG efficiency at a 5° incident angle, highlighting the potential of copper nanoparticles for applications in nonlinear optics and photonic device design.

Keywords: Cu Nanoparticles, Second Harmonic Generation, efficiency, Pulse Laser Ablation in Liquid, nanophotonics

How to Cite?: Zahraa Sahib Shanon, "Second Harmonic Generation Efficiency of Copper Nanoparticles Synthesized via Pulsed Laser Ablation in Liquid (PLAL)", Volume 14 Issue 11, November 2025, International Journal of Science and Research (IJSR), Pages: 1298-1301, https://www.ijsr.net/getabstract.php?paperid=SR251114005911, DOI: https://dx.doi.org/10.21275/SR251114005911