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Spaser: Nanolaser Below the Diffraction Limit

Interactive 3D spaser simulator: pump a gold nanoparticle wrapped in a dye gain shell past its lasing threshold and watch coherent surface-plasmon oscillation replace random spontaneous emission, at a cavity size tens of times smaller than any ordinary diffraction-limited laser spot.

Nanotechnology & MEMS3DAdvanced60 FPS

Explore the spaser — a nanolaser that amplifies surface plasmons on a metal nanoparticle instead of photons in a mirrored cavity. Pump the dye gain shell around a gold nanocore past its lasing threshold and watch the surface-plasmon field snap from incoherent flicker into a single coherent oscillation, with the light-output curve kinking upward and the emission linewidth collapsing exactly as in a conventional laser — except this entire cavity is tens of times smaller than the diffraction-limited spot any ordinary lens-focused laser could ever produce.

⚙ Under the hood

Pump a gold nanoparticle wrapped in a dye gain shell past its lasing threshold and watch surface-plasmon oscillation snap from incoherent flicker into one coherent mode, with the light-output curve kinking and the linewidth collapsing — all inside a cavity tens of times smaller than any diffraction-limited laser spot.

nanophotonicsspasernanolaserplasmonicsgain mediumlasing thresholddiffraction limitThree.js

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install