Applied Physics Letters · 2003 · 172 citations · 14 references
Natural SciencesMaterials SciencePhysicsOptical MaterialsOpticsOptoelectronicsLaser Host MaterialsLaser OpticsLaser PhysicsOptical Properties Of SemiconductorsOptical SourcesSemiconductor LasersLaser EfficiencyOptical EfficiencyOptical LossesPump EfficiencyPump Efficiency AnalysisPumpingQuantum EfficiencySaturation Effects
One-micron continuous-wave (cw) laser emission with 0.80 slope efficiency (0.79 optical-to-optical efficiency) under Ti: sapphire and 0.75 slope efficiency relative to absorbed power under diode-laser pumping at 880 nm into the emitting level is demonstrated in a 1-mm-thick, 1.0-at. % Nd:YVO4 crystal. These values are superior to those obtained with 809-nm pumping into the level F45/2, and can be explained consistently by the effect of the quantum defect between the pump and laser radiation, the superposition of pump and laser mode volumes, the pump-level efficiency and the residual optical losses. In the analysis of the 809-nm pumping data a pump-level efficiency equal to the unity was employed, as determined with a method based on the pump-saturation effects on absorption.
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Stimulated-emission cross section at 1064 and 1342 nm in Nd : YVO4
Armin W. Tucker, Milton Birnbaum, C. L. Fincher et al. · Journal of Applied Physics · 1977 · 170 citations