Adiabatic nanofocusing of channel plasmon polaritons.

Using the analytical description of channel plasmon polaritons (CPPs) developed recently [Opt. Lett.34, 2039 (2009)], we consider the adiabatic CPP nanofocusing in V grooves with linearly decreasing groove angles, deriving closed-form expressions for local field enhancements. Calculations at telecom wavelengths predict the possibility of reaching the intensity enhancements exceeding approximately 1200 for realistic groove tapers cut into gold. Our conclusions are in good agreement with the results of previous investigations.

[1]  Marco Lazzarino,et al.  Nanoscale chemical mapping using three-dimensional adiabatic compression of surface plasmon polaritons. , 2010, Nature Nanotechnology.

[2]  Ewold Verhagen,et al.  Nanowire plasmon excitation by adiabatic mode transformation. , 2009, Physical review letters.

[3]  Dmitri K. Gramotnev,et al.  Adiabatic nanofocusing of plasmons by sharp metallic grooves: Geometrical optics approach , 2005 .

[4]  Eloïse Devaux,et al.  Wavelength selective nanophotonic components utilizing channel plasmon polaritons. , 2007, Nano letters.

[5]  Xiang Zhang,et al.  Compressing surface plasmons for nano-scale optical focusing. , 2009, Optics express.

[6]  M. Stockman,et al.  Nanofocusing of optical energy in tapered plasmonic waveguides. , 2004, Physical review letters.

[7]  Dmitri K. Gramotnev,et al.  Adiabatic nanofocusing of plasmons by a sharp metal wedge on a dielectric substrate , 2007 .

[8]  Jesper Jung,et al.  Scaling for gap plasmon based waveguides. , 2008, Optics express.

[9]  T. Elsaesser,et al.  Grating-coupling of surface plasmons onto metallic tips: a nanoconfined light source. , 2007, Nano letters.

[10]  S. Bozhevolnyi.  Effective-index modeling of channel plasmon polaritons. , 2006, Optics express.

[11]  Min Qiu,et al.  Guided plasmon polariton at 2D metal corners , 2007 .

[12]  L Martin-Moreno,et al.  Channel plasmon-polaritons: modal shape, dispersion, and losses. , 2006, Optics letters.

[13]  F. García-Vidal,et al.  Guiding and focusing of electromagnetic fields with wedge plasmon polaritons. , 2008, Physical review letters.

[14]  Luis Martín-Moreno,et al.  Nanofocusing with channel plasmon polaritons. , 2009, Nano letters.

[15]  S. Bozhevolnyi,et al.  Analytic description of channel plasmon polaritons. , 2009, Optics letters.

[16]  Kh. V. Nerkararyan,et al.  Superfocusing of a surface polariton in a wedge-like structure , 1997 .