Second and third-order nonlinear optical properties of Er3+/Yb3+ doped PbO-GeO2-Ga2O3 glasses with Au nanoparticles
Source abstract
Abstract
Abstract This paper reports the second- and third- order nonlinear properties of Er3+/Yb3+ -doped PbO-GeO2-Ga2O3 glasses with Au nanoparticles. The glasses were prepared by the melt-quenching technique, followed by annealing for the nucleation of gold nanoparticles. A 200 kV high-resolution transmission electron microscope (HR-TEM) was used to verify the presence of Au nanoparticles and estimate their sizes. The role of annealing on the possible variation of the third-order nonlinear electric susceptibility is studied in details following the possible changes in the Au nanoparticle concentration. Two-photon absorption (TPA) coefficient (β) and nonlinear refractive index (n2) was measured by the conventional Z-scan method at 532 nm wavelength. The highest values were obtained for the sample with gold nanoparticles annealed for 52 h. Second harmonic generation (SHG) measurements were also performed and showed low conversion efficiency.
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Research context
OpenAlex topics: Nonlinear Optical Materials Studies · Quantum Dots Synthesis And Properties · Laser-Ablation Synthesis of Nanoparticles
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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