Optics Express · 2009 · 28 citations · 7 references
Natural SciencesMaterials ScienceOpticsOptoelectronicsPhotonicsFiber Optic MaterialsFiber OpticsFiber PropertiesLaser OpticsOptical Fiber PropagationOptical FibersFiber LasersSingle-mode FibersSingle-mode OperationSingle-mode Optical Fibers
A new reduced mode overlap (RMO) single mode fiber design is proposed and demonstrated. For the first time saturated photo darkening operation is observed in a nominal 350 W Yb / Al co-doped silica fiber laser. After 1500 hours operation less than 7% slope efficiency degradation is found and further 500 hours operation show no degradation.
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Ring-doped cladding-pumped single-mode three-level fiber laser
Johan Nilsson, J.D. Minelly, R. Paschotta et al. · Optics Letters · 1998 · 173 citations