Electronics Letters · 1988 · 89 citations · 0 references
Natural SciencesElectrical EngineeringOpticsOptoelectronicsPhotonicsFiber OpticsLaser OpticsLaser PhysicsNonlinear OpticsOptical FibersOptical SourcesAbsorbed PowerDoped Fiber MaterialsFiber LasersLaser Energy AbsorptionLaser OscillationLaser ThresholdLasersRare-earth-doped Fibers
Laser emission in the wavelength band 1.88–1.96 pm has been observed in a monomode fibre doped with thulium. When pumped with a dye laser at 797 nm an absorbed threshold power of 21 mW and a slope efficiency of 13% were obtained.