TY - JOUR
T1 - Three-dimensional nanofocusing of light through surface plasmon scattering by a lump-like defect in metal/dielectric/metal slot waveguides
AU - Zharov, Alexander A.
AU - Zharova, Nina A.
AU - Smirnova, Daria A.
AU - Zharov, Alexender A.
PY - 2013/3
Y1 - 2013/3
N2 - We show that scattering of a surface plasmon by lump-like defects on the walls of a metal/dielectric/metal slot waveguide may be accompanied by 3D nanofocusing of light. Such nanofocusing results in the emergence of "hot spots" of nanometer size with a field intensity several orders higher than in the incident plasmon. This effect takes place only if the lump size is smaller than some critical value. We also demonstrate that a so-called plasmonic "black hole" can concentrate electromagnetic energy as well. We believe that the effect of plasmon nanofocusing may be used for plasmonic nanosensing or subwavelength microscopy.
AB - We show that scattering of a surface plasmon by lump-like defects on the walls of a metal/dielectric/metal slot waveguide may be accompanied by 3D nanofocusing of light. Such nanofocusing results in the emergence of "hot spots" of nanometer size with a field intensity several orders higher than in the incident plasmon. This effect takes place only if the lump size is smaller than some critical value. We also demonstrate that a so-called plasmonic "black hole" can concentrate electromagnetic energy as well. We believe that the effect of plasmon nanofocusing may be used for plasmonic nanosensing or subwavelength microscopy.
UR - http://www.scopus.com/inward/record.url?scp=84875627816&partnerID=8YFLogxK
U2 - 10.1364/JOSAB.30.000626
DO - 10.1364/JOSAB.30.000626
M3 - Article
SN - 0740-3224
VL - 30
SP - 626
EP - 630
JO - Journal of the Optical Society of America B: Optical Physics
JF - Journal of the Optical Society of America B: Optical Physics
IS - 3
ER -