Bessel-like photonic nanojets from core-shell sub-wavelength spheres

被引：37

作者：

Grojo, David ^{[1
]}

Sandeau, Nicolas ^{[2
]}

Boarino, Luca ^{[3
]}

Constantinescu, Catalin ^{[1
]}

De Leo, Natascia ^{[3
]}

Laus, Michele ^{[4
]}

Sparnacci, Katia ^{[4
]}

机构：

[1] Aix Marseille Univ, CNRS, UMR LP3 7341, F-13288 Marseille, France

[2] Aix Marseille Univ, CNRS, Inst Fresnel, UMR 7249, F-13013 Marseille, France

[3] INRIM, NanoFacil, Div Electromagnetism, I-10135 Turin, Italy

[4] Univ Eastern Piedmont Amedeo, Dept Sci & Technol, I-15121 Alessandria, Italy

来源：

OPTICS LETTERS | 2014年 / 39卷 / 13期

关键词：

PROPAGATION; ARRAYS; BEAMS; MICROSPHERES; FLUORESCENCE;

D O I：

10.1364/OL.39.003989

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

It is accepted so far that the formation of photonic nanojets requires the use of large dielectric spheres (several wavelengths in diameter). Here we show both numerically and experimentally that similar effects can be obtained with properly engineered sub-wavelength core-shell colloids. The design of the spheres is strongly inspired by a far-field approach for the generation of Bessel beams. (C) 2014 Optical Society of America

引用

页码：3989 / 3992

页数：4

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