Size-dependent second-harmonic generation from gold nanoparticles

被引：39

作者：

Capretti, Antonio ^{[1
,2
,3
]}

Pecora, Emanuele F. ^{[2
,3
]}

Forestiere, Carlo ^{[1
,2
,3
]}

Dal Negro, Luca ^{[2
,3
]}

Miano, Giovanni ^{[1
]}

机构：

[1] Univ Naples Federico II, Dept Elect Engn & Informat Technol, I-80125 Naples, Italy

[2] Boston Univ, Dept Elect & Comp Engn, Boston, MA 02215 USA

[3] Boston Univ, Photon Ctr, Boston, MA 02215 USA

来源：

PHYSICAL REVIEW B | 2014年 / 89卷 / 12期

基金：

美国国家科学基金会;

关键词：

SECOND-HARMONIC GENERATION; PARTICLE-SIZE; SURFACE; METAL; SILVER; NANOANTENNAS; REFLECTION; SCATTERING; ARRAYS; FILMS;

D O I：

10.1103/PhysRevB.89.125414

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We experimentally and theoretically investigated the second-harmonic (SH) radiation from spherical gold nanoparticles as function of the particle radius in the range from 40 to 100 nm. By fitting the measured SH intensity to an analytical model, we demonstrated size-dependent second-order susceptibility tensor components, which significantly increase by reducing the size of the particles. Finally, we found new SH polarization diagrams for large particle radii arising from the interference among the different multipolar terms.

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页数：5

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