EPFL researchers demonstrate first on-chip ultrafast laser using silicon nitride photonics

Summary

Researchers at EPFL have developed the first on-chip ultrafast laser using erbium-doped silicon nitride waveguides and Bragg gratings. The laser generates intense picosecond pulses directly on a photonic chip, enabling new capabilities for photonic integrated circuits (PICs). Using the Mamyshev oscillator concept with offset gratings, the design prevents continuous-wave lasing and only allows pulsed operation. This breakthrough brings ultrafast laser functionality to chip-scale photonics, potentially enabling more integrated applications in sensing, computing, and communications.

Source

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