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CW room-temperature blue upconversion fibre laser
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1992
Year
Optical PumpingPhotonicsOptical MaterialsEngineeringLaser ScienceOptical PropertiesLaser ApplicationsBlue Upconversion LaserFluorozirconate Glass FibreFiber LasersActive IonHigh-power LasersLasersFiber LaserFibre AmplifierOptoelectronics
The Letter reports what the authors believe to be the first single-wavelength pumped, CW, room-temperature, blue upconversion laser. This 480nm laser uses Tm3+ as the active ion in a fluorozirconate glass fibre. Up to 60 mW of output power has been observed with a slope efficiency of 18% with respect to coupled pump power.