Influence of the Fifth-Order Nonlinearity of Gold Nanorods on the Performance of Random Lasers

被引：5
|
作者：
Oliveira, Nathalia Talita C. [2 ]
Silva-Neto, Manoel L. [2 ]
Reyna, Albert S. [1 ]
de Araujo, Cid B. [2 ,3 ]
机构：
[1] Univ Fed Rural Pernambuco, Unidade Acad Cabo Santo Agostinho, Programa Posgrad Engn Fis, BR-54518430 Cabo De Santo Agostinho, PE, Brazil
[2] Univ Fed Rural Pernambuco, Programa Posgrad Ciencia Mat, BR-50740560 Recife, PE, Brazil
[3] Univ Fed Rural Pernambuco, Dept Fis, BR-50740560 Recife, PE, Brazil
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2020年 / 124卷 / 19期
关键词：
SCATTERING; 3RD-ORDER;
D O I：
10.1021/acs.jpcc.0c02563
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We present the first experimental evidence for the influence of the fifth-order nonlinearity on the characteristics of random lasers with plasmonic nanoparticles as scatterers. The experiments were performed with gold nanorods suspended in an ethanolic solution of Rhodamine 6G, pumped by a picosecond laser. It is shown that by varying the nanorod aspect ratio it is possible to control the cooperative influence of both transverse and longitudinal localized surface plasmons on the fifth-order nonlinear light scattering, a phenomenon that allows us to manage the optical feedback causing significant changes in the threshold intensity and emission power of random lasers.
引用
收藏
页码：10705 / 10709
页数：5
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