Nanofocusing of optical energy in tapered plasmonic waveguides
MI Stockman - Physical review letters, 2004 - APS
Physical review letters, 2004•APS
We predict theoretically that surface plasmon polaritons propagating toward the tip of a
tapered plasmonic waveguide are slowed down and asymptotically stopped when they tend
to the tip, never actually reaching it (the travel time to the tip is logarithmically divergent).
This phenomenon causes accumulation of energy and giant local fields at the tip. There are
various prospective applications in nano-optics and nanotechnology.
tapered plasmonic waveguide are slowed down and asymptotically stopped when they tend
to the tip, never actually reaching it (the travel time to the tip is logarithmically divergent).
This phenomenon causes accumulation of energy and giant local fields at the tip. There are
various prospective applications in nano-optics and nanotechnology.
Abstract
We predict theoretically that surface plasmon polaritons propagating toward the tip of a tapered plasmonic waveguide are slowed down and asymptotically stopped when they tend to the tip, never actually reaching it (the travel time to the tip is logarithmically divergent). This phenomenon causes accumulation of energy and giant local fields at the tip. There are various prospective applications in nano-optics and nanotechnology.
American Physical Society