The dramatic field enhancement at the extremity of finite chains of strongly coupled gold nanoparticles illuminated under total internal reflection is investigated numerically. We demonstrate that high enhancement factors can be achieved by exploiting the in-plane forward scattering of the particles, with geometries achievable by state-of-the-art lithographic techniques.
© 2005 Optical Society of America
Petru Ghenuche, Romain Quidant, and Gonçal Badenes, "Cumulative plasmon field enhancement in finite metal particle chains," Opt. Lett. 30, 1882-1884 (2005)