Optical and Nonlinear Optical Limiting Properties of AgNi Alloy Nanostructures

被引：19

作者：

Udayabhaskar, R. ^{[1
]}

Sreekanth, P. ^{[2
]}

Karthikeyan, B. ^{[1
]}

机构：

[1] Natl Inst Technol, Dept Phys, Tiruchirappalli 620015, India

[2] Raman Res Inst, Light & Matter Phys Grp, Ultrafast & Nonlinear Opt Lab, Bangalore 560080, Karnataka, India

来源：

PLASMONICS | 2016年 / 11卷 / 06期

关键词：

Surface plasmons; AgNi; Metal nanostructures; Optical limiting; Excited state absorption (ESA); Saturable absorption (SA); Nonlinear; SILVER NANOPARTICLES;

D O I：

10.1007/s11468-016-0197-2

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：

Silver-nickel alloy nanoparticles with varying size were synthesized by reducing the metal precursors chemically using a single-step solution-based synthesis route. The structural, optical, and nonlinear optical properties of the prepared samples were investigated. The synthesized samples having highly agglomerated, interconnected nature and found to exhibit dipole and multipole surface plasmon resonance related optical absorption bands. Nonlinear optical and optical limiting properties were investigated using a single beam open aperture z-scan technique with the use of 532 nm, 5-ns laser pulses. The nonlinearity observed was found to have contributions from saturable absorption (SA) and excited state absorption (ESA) related to free carriers. The effective nonlinear optical absorption was enhanced in AgNi alloy compared to pure Ag nanostructures.

引用

页码：1461 / 1466

页数：6

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