Design of multipolar plasmon excitations in silver nanoparticles

We report on the experimental observation of multipolar plasmon excitations in lithographically designed elongated silver particles. In contrast to spheres, where the extinction bands of the respective multipolar plasmons overlap considerably to form a broad spectrum, spectrally well-separated extinction bands corresponding to plasmons of multipolar order up to n=6 are found. The results agree well with numerical simulations based on the Green’s Dyadic method.

[1]  Franz R. Aussenegg,et al.  Optical nanocluster plasmon sensors as transducers for bioaffinity interactions , 1998, Photonics West - Biomedical Optics.

[2]  Eric Bourillot,et al.  Squeezing the Optical Near-Field Zone by Plasmon Coupling of Metallic Nanoparticles , 1999 .

[3]  Lechner,et al.  Metal nanoparticle gratings: influence of dipolar particle interaction on the plasmon resonance , 2000, Physical review letters.

[4]  Bernhard Lamprecht,et al.  RESONANT AND OFF-RESONANT LIGHT-DRIVEN PLASMONS IN METAL NANOPARTICLES STUDIED BY FEMTOSECOND-RESOLUTION THIRD-HARMONIC GENERATION , 1999 .

[5]  Michael Vollmer,et al.  Optical properties of metal clusters , 1995 .

[6]  H. Ditlbacher,et al.  Spectrally coded optical data storage by metal nanoparticles. , 2000, Optics letters.

[7]  M. Quinten,et al.  Scattering and extinction of evanescent waves by small particles , 1999 .

[8]  Thomas A. Klar,et al.  Surface-Plasmon Resonances in Single Metallic Nanoparticles , 1998 .

[9]  Naomi J. Halas,et al.  Light scattering from dipole and quadrupole nanoshell antennas , 1999 .

[10]  R. Zenobi,et al.  Nanoscale chemical analysis by tip-enhanced Raman spectroscopy , 2000 .

[11]  Eric Bourillot,et al.  Direct observation of localized surface plasmon coupling , 1999 .

[12]  Jean-Claude Weeber,et al.  Theoretical principles of near-field optical microscopies and spectroscopies , 2000 .

[13]  G. Mie.  Beiträge zur Optik trüber Medien, speziell kolloidaler Metallösungen , 1908 .

[14]  Franz R. Aussenegg,et al.  Thin films by regular patterns of metal nanoparticles: Tailoring the optical properties by nanodesign , 1996 .

[15]  E. Palik.  Handbook of Optical Constants of Solids , 1997 .

[16]  Alain Dereux,et al.  Near-field optics theories , 1996 .