Plasmon-polariton nano-strip resonators: from visible to infra-red

被引：60

作者：

Della Valle, G. ^{[1
,2
,3
]}

Sondergaard, T. ^{[3
]}

Bozhevolnyi, S. I. ^{[3
,4
]}

机构：

[1] Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy

[2] IFN CNR, I-20133 Milan, Italy

[3] Aalborg Univ, Dept Phys & Nanotechnol, DK-9220 Aalborg, Denmark

[4] Univ So Denmark, Inst Sensors Signals & Electrotechn SENSE, DK-5230 Odense, Denmark

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 10期

关键词：

D O I：

10.1364/OE.16.006867

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Dispersion of the resonant properties exhibited by silver and gold nano-strips in a wide range of wavelengths is considered. The tunability and Q-factor of scattering resonances as well as the field enhancement achieved at strip terminations are analyzed in the wavelength range from visible to near infrared (400-1700 nm), confirming that the resonant behaviour is dominated by dispersion properties of short-range surface-plasmon polaritons (SR-SPPs) propagating along the strip. It is found that, while the Q-factor decreases for longer wavelengths due to the SR-SPP dispersion curve moving closer to the light line, the field enhancement depending also on the metal susceptibility magnitude remains largely unaffected. The results obtained are also used to estimate the phase change involved in the SR-SPP reflection by strip terminations. (C) 2008 Optical Society of America.

引用

页码：6867 / 6876

页数：10

共 19 条

[1]

[Anonymous], SURFACE PLASMONS

[2] General properties of slow-plasmon resonant nanostructures: nano-antennas and resonators [J].

Bozhevolnyi, Sergey I. ;

Sondergaard, Thomas .

OPTICS EXPRESS, 2007, 15 (17) :10869-10877

[3] Silver nanowires as surface plasmon resonators [J].

Ditlbacher, H ;

Hohenau, A ;

Wagner, D ;

Kreibig, U ;

Rogers, M ;

Hofer, F ;

Aussenegg, FR ;

Krenn, JR .

PHYSICAL REVIEW LETTERS, 2005, 95 (25)

[4] SURFACE PLASMONS IN THIN FILMS [J].

ECONOMOU, EN .

PHYSICAL REVIEW, 1969, 182 (02) :539-&

[5] Near-field optical imaging of plasmon modes in gold nanorods [J].

Imura, K ;

Nagahara, T ;

Okamoto, H .

JOURNAL OF CHEMICAL PHYSICS, 2005, 122 (15)

[6]

Jin J., 2002, The Finite Element Method in Electromagnetics, V2

[7] OPTICAL CONSTANTS OF NOBLE METALS [J].

JOHNSON, PB ;

CHRISTY, RW .

PHYSICAL REVIEW B, 1972, 6 (12) :4370-4379

[8] Nano-optics from sensing to waveguiding [J].

Lal, Surbhi ;

Link, Stephan ;

Halas, Naomi J. .

NATURE PHOTONICS, 2007, 1 (11) :641-648

[9] Near-field optical properties of single plasmonic nanowires [J].

Laroche, Thierry ;

Girard, Christian .

APPLIED PHYSICS LETTERS, 2006, 89 (23)

[10] Resonances of individual metal nanowires in the infrared [J].

Neubrech, F. ;

Kolb, T. ;

Lovrincic, R. ;

Fahsold, G. ;

Pucci, A. ;

Aizpurua, J. ;

Cornelius, T. W. ;

Toimil-Molares, M. E. ;

Neumann, R. ;

Karim, S. .

APPLIED PHYSICS LETTERS, 2006, 89 (25)

← 1 2 →