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Short-pulse fibre lasers are a complex dynamical system possessing a broadspace of operating states that can be accessed through control of cavityparameters. Determination of target regimes is a multi-parameter globaloptimisation problem. Here, we report the implementation of a genetic algorithmto intelligently locate optimum parameters for stable single-pulse mode-lockingin a Figure-8 fibre laser, and fully automate the system turn-on procedure.Stable ultrashort pulses are repeatably achieved by employing a compoundfitness function that monitors both temporal and spectral output properties ofthe laser. Our method of encoding photonics expertise into an algorithm andapplying machine-learning principles paves the way to self-optimising `smart'optical technologies.

Towards 'smart lasers': self-optimisation of an ultrafast pulse source using a genetic algorithm