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Spaser: Plasmon Amplification by Stimulated Emission (2D)

Interactive 2D spaser simulator: integrate the coupled population-inversion / plasmon rate equations in real time, sweep pump rate against steady-state plasmon intensity to see the real lasing threshold, and watch the time-domain trace snap from spontaneous noise into coherent amplification.

Materials Science2DAdvanced60 FPS📱 Mobile-adapted⇄ 3D version

A spaser is a nanoscale amplifier: a gold nanoparticle core acts as a resonant cavity for a localized surface plasmon, surrounded by a shell of optically-pumped gain molecules. This 2D canvas simulator integrates the same coupled rate equations as the 3D version for molecular population inversion and plasmon field occupation in real time, and adds two live plots: a numerically-swept steady-state intensity-vs-pump curve that traces out the real lasing threshold, and a time-domain trace of the plasmon field so you can watch it snap from spontaneous noise into a bright, self-sustaining amplified glow once gain overtakes loss.

⚙ Under the hood

Simulate a spaser -- a gold nanoparticle core surrounded by a pumped dye-molecule gain shell -- and watch population inversion and the localized plasmon field cross threshold into coherent nanoscale amplification.

spaserplasmonicsnanophotonicsgain-mediumstimulated-emissionnanoparticle

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install