Second-order nonlinearity of NaNbO3 nanocrystals with orthorhombic crystalline structure

被引：13
作者：
Barbosa-Silva, Renato [1 ]
Silva, Jefferson F. [2 ]
Rocha, Ueslen [2 ]
Jacinto, Carlos [2 ]
de Araujo, Cid B. [1 ]
机构：
[1] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil
[2] Univ Fed Alagoas, Inst Fis, BR-57072970 Maceio, AL, Brazil
来源：
JOURNAL OF LUMINESCENCE | 2019年 / 211卷
关键词：
Hyper-Rayleigh; First hyperpolarizability; Sodium niobate; Perovskite; Pechini's method; Second harmonic generation; HYPER-RAYLEIGH SCATTERING; LINBO3; NANOCRYSTALS; GLASS; NANOPARTICLES; GENERATION;
D O I：
10.1016/j.jlumin.2019.03.012
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Orthorhombic sodium niobate (NaNbO3) nanocrystals, transparent in the visible and near-infrared, were synthesized by using the Pechini's sol-gel method. Experiments were performed to measure the first hyperpolarizability of the nanoparticles by using a pulsed laser operating at 1064 nm. The hyper-Rayleigh scattering technique was used to analyze the second harmonic scattered light generated by the nanocrystals. By using the external reference method, with para-nitroaniline as the standard reference, we determined the NaNbO3 hyperpolarizability per nanoparticle volume (0.93x10(-29) esu/nm(3)) for the first time, and show that the effective second-order susceptibility has the same order-of-magnitude as LiNbO3 and KNbO3 nanocrystals.
引用
收藏
页码：121 / 126
页数：6
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