Seeing the light: high-power visible-light generation using silicate fibre

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Unlike their near-infrared counterparts, visible-light-emitting lasers are inefficient and complicated, impacting their broader deployment in industry, medicine, and telecommunications. To address this, we will create a new class of laser and amplifier based on an entirely new doped silicate glass fibre that will display low background loss and resilience to photodegradation from high-power visible light. This will solve one of the last important problems in fibre laser research. The primary outcome will be a series of high-power continuous-wave, ultrashort-pulse, all-fibre lasers emitting at yellow and red wavelengths, with significant benefits for space, defence, manufacturing, and human health.