Electronics Letters · 1992 · 194 citations · 0 references
Natural SciencesPhysicsOpticsOptoelectronicsPhotonicsFiber OpticsLaser OpticsLaser PhysicsNonlinear OpticsOptical FibersOptical GlassesFiber LasersHigh-power LasersPower OutputPump EfficiencyPump OperationUpconversion In GlassesUpconversion Luminescence
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.