Experimental realisation of percolation with coupled lasers

Researchers built a two-dimensional grid of one hundred coupled lasers to study percolation experimentally, Physics World reports. Percolation describes how individual connections merge into larger connected systems—the same principle that governs power grids, disease outbreaks, and brain activity. When the lasers crossed a critical threshold, a giant cluster formed spanning the entire grid, and the lasers began to synchronize their phase. Nonlinear effects complicated the picture, though: at lower power levels, the system required more active lasers to reach that threshold than ideal theory predicted, and weaker clusters were suppressed. The findings show how real physical systems diverge from theoretical models, and offer a controllable testbed for studying how connectivity and competition intertwine in complex networks.

Listen to this story

Hear this and more stories in a personalized audio briefing.

Open The Chonkerton