Nonlinear photoacoustic response of suspensions of laser-synthesized plasmonic titanium nitride nanoparticles

被引:12
|
作者
Maldonado, Melissa E. [1 ]
Das, Avishek [1 ]
Gomes, Anderson S. L. [1 ,2 ]
Popov, Anton A. [2 ]
Klimentov, Sergey M. [2 ]
Kabashin, Andrei, V [2 ,3 ]
机构
[1] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil
[2] MEPhI, Inst Engn Phys Biomed PhysBio, Bionanophoton Lab, 31 Kashirskoesh, Moscow 115409, Russia
[3] Aix Marseille Univ, CNRS, LP3, Campus Luminy,Case 917, F-13288 Marseille, France
基金
俄罗斯科学基金会;
关键词
Nanoparticles;
D O I
10.1364/OL.404304
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A nonlinear photoacoustic (PA) response from solutions of 40 nm plasmonic titanium nitride nanoparticles (NPs) synthesized by laser ablation in a liquid environment (acetone) is reported. Using a photoacoustic Z-scan with 5 ns pumping pulses, values of effective nonlinear absorption (NLA) coefficients (beta PA,eff) were measured and found to be 3.2710.17 x 10(-8), 6.4110.32 x 10(-8), and 3.2210.16 x 10(-8) for 600, 700, and 800 nm pumping wavelengths, respectively. To take into account the influence of nonlinear scattering, absorption-dependent PA measurements were carried out together with the optical Z-scan, and the obtained data were compared. The origin of the effective absorptive nonlinearity is discussed based on combined NLA in NPs, nonlinear scattering, and bubble generation triggered by NP-mediated light absorption. Potential applications include biomedical diagnostics and therapy. (C) 2020 Optical Society of America
引用
收藏
页码:6695 / 6698
页数:4
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