title: Confined surface plasmon-polariton amplifiers.
abstract: We demonstrate the realization of confined surface plasmon polariton amplifiers using a thin layer of the organic gain medium 4-dicyanomethylene-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran dispersed in a tris(8-hydroxy-quinolinato)aluminum matrix. Complete loss compensation, which occurs at a pump fluence of approximately 200 μJ/cm(2), is directly observed in the time domain and studied for a range of waveguide lengths. The power dependence is also reported, and a significant net gain of 93 dB/mm is observed at the highest fluence.
authors: Department of Physics, Imperial College London, London, SW7 2AZ United Kingdom. s.kena-cohen@imperial.ac.uk
authors: Stéphane
authors: S
authors: Kéna-Cohen
authors: Paul N
authors: PN
authors: Stavrinou
authors: Donal D C
authors: DD
authors: Bradley
authors: Stefan A
authors: SA
authors: Maier