Plasmon-enhanced optical nonlinearity in pyramidal silver nanocrystals

被引：0

作者：

Pradhan, Amit kumar ^{[1
]}

Kumar, Suman ^{[2
]}

Ballav, Swastik ^{[3
]}

Priyam, Amiya

Datta, Prasanta kumar ^{[1
]}

机构：

[1] Indian Inst Technol Kharagpur, Dept Phys, Kharagpur 721302, India

[2] Cent Univ South Bihar, Sch Phys & Chem Sci, Dept Chem, Gaya 824236, India

[3] Univ Cent Florida, NanoSci Technol Ctr, Orlando, FL 32826 USA

来源：

OPTICS LETTERS | 2024年 / 49卷 / 20期

关键词：

SATURABLE ABSORPTION; METAL NANOPARTICLES; REFRACTION; GOLD; COMPOSITES;

D O I：

10.1364/OL.541804

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This study investigates the coherent optical nonlinearity of two sets of anisotropic silver nanocrystals (NCs) showing plasmon peaks at 530 and 610 nm (hence named Ag530 and Ag-610 NCs, respectively). The nonlinear optical (NLO) properties of Ag-530 and Ag-610 NCs are compared with spherical silver NCs exhibiting plasmon peak at 420 nm (hence called Ag-420 NCs). Resonant excitation for all NCs, with Ag-610 NCs displaying exceptional trans(2PA), three-photon (3PA), and saturable (SA) absorption in Ag-610 NCs. In the 3PA regime, the effective nonlinear absorption coefficient of Ag-610 NCs is 2217c and 3407c that of Ag-420 and Ag-530 NCs, respectively, at a laser are reserved.

引用

页码：5985 / 5988

页数：4

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