Abstract Gold-nanoparticles (NPs) embedded in a germanate glass system were prepared and their linear and nonlinear optical properties were studied and analyzed. The glasses were produced using the melt-quenching technique and the NPs were synthesized using thermal reduction. Materials were prepared using 0.5 wt% of Er 2 O 3 and other concentrations (1.0/3.0 wt%) of Yb 2 O 3 and Au 2 O 3 . The data article reports the optical properties such as Urbach energy ( E U ), energy gap ( E g ) and linear refractive index ( n ). We showed that the linear refractive index for tested glasses is in the range 2.12 ÷ 2.33. Urbach energy and energy gap were determined using Tauc method. The result showed that E U are in the range 0.066 ÷ 0.150 [eV] and E g are 2.945 ÷ 3.006 [eV]. The nonlinear optical properties (NLO), such as nonlinear refractive index ( n 2 ), nonlinear absorption coefficient ( β ) and third-order nonlinear susceptibilities ( χ 3 > ), were also determined. Measurements were made using the Z -scan technique (wavelength λ = 532 nm, 1 Hz repetition rate). The magnitude of these parameters were found to be 1 0 − 6 cm 2 /GW, 1 0 − 9 cm/W and 1 0 − 20 m 2 /V 2 , respectively. The most increased TPA coefficient during the annealing process is observed in the material containing the largest amount of gold (PGG + 0.5%Er-1.0%Yb-3.0%Au). The annealing process is correlated with the reduction of gold ions and mainly influences the TPA results. The effect is stronger for samples containing higher quantities of gold.

中文翻译：

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退火时间对掺杂 Er3+ 和 Yb3+、Au3+ 离子的 PbOGeO2Ga2O3 玻璃线性和非线性光学性能的影响

摘要 制备了嵌入锗酸盐玻璃体系的金纳米粒子（NPs），并对其线性和非线性光学性质进行了研究和分析。玻璃是使用熔体淬火技术生产的，纳米颗粒是使用热还原合成的。使用0.5重量％的Er 2 O 3 和其他浓度(1.0/3.0重量％)的Yb 2 O 3 和Au 2 O 3 制备材料。数据文章报告了光学特性，例如 Urbach 能量 (EU)、能隙 (Eg) 和线性折射率 (n)。我们表明测试眼镜的线性折射率在 2.12 ÷ 2.33 的范围内。Urbach 能量和能隙使用 Tauc 方法确定。结果表明，EU 在 0.066 ÷ 0.150 [eV] 范围内，E g 为 2.945 ÷ 3.006 [eV]。非线性光学特性 (NLO)，例如非线性折射率 (n 2 )，还确定了非线性吸收系数 ( β ) 和三阶非线性磁化率 ( χ 3 > )。使用 Z 扫描技术（波长 λ = 532 nm，1 Hz 重复率）进行测量。发现这些参数的大小分别为1 0 - 6 cm 2 /GW、1 0 - 9 cm/W 和1 0 - 20 m 2 /V 2 。退火过程中 TPA 系数增加最多的是金含量最高的材料 (PGG + 0.5%Er-1.0%Yb-3.0%Au)。退火过程与金离子的还原有关，主要影响 TPA 结果。对于含金量较高的样品，效果更强。使用 Z 扫描技术（波长 λ = 532 nm，1 Hz 重复率）进行测量。发现这些参数的大小分别为1 0 - 6 cm 2 /GW、1 0 - 9 cm/W 和1 0 - 20 m 2 /V 2 。退火过程中 TPA 系数增加最多的是金含量最高的材料 (PGG + 0.5%Er-1.0%Yb-3.0%Au)。退火过程与金离子的还原有关，主要影响 TPA 结果。对于含金量较高的样品，效果更强。使用 Z 扫描技术（波长 λ = 532 nm，1 Hz 重复率）进行测量。发现这些参数的大小分别为1 0 - 6 cm 2 /GW、1 0 - 9 cm/W 和1 0 - 20 m 2 /V 2 。退火过程中 TPA 系数增加最多的是金含量最高的材料 (PGG + 0.5%Er-1.0%Yb-3.0%Au)。退火过程与金离子的还原有关，主要影响 TPA 结果。对于含金量较高的样品，效果更强。0%Yb-3.0%Au)。退火过程与金离子的还原有关，主要影响 TPA 结果。对于含金量较高的样品，效果更强。0%Yb-3.0%Au)。退火过程与金离子的还原有关，主要影响 TPA 结果。对于含金量较高的样品，效果更强。