Ceramic Yb:Lu<sub>2</sub>O<sub>3</sub> thin-disk laser oscillator delivering an average power exceeding 1 kW in continuous-wave operation
Stefan Esser, Christian Röhrer, Xiaodong Xu, Jun Wang, Jian Zhang, Thomas Graf, Marwan Abdou Ahmed
Abstract
We report on continuous-wave (cw) laser experiments with a high-quality and large-size Yb:Lu 2 O 3 polycrystalline transparent ceramic in a thin-disk laser oscillator. An output power of up to 1190 W was achieved in multimode operation with an optical efficiency of 60.3%. In fundamental-mode operation, a cw output power of 409 W was extracted with an optical efficiency of 35.6% and a beam propagation factor of M 2 = 1.11.
Topics & Concepts
Materials scienceOpticsLaserMulti-mode optical fiberSlope efficiencyPower (physics)CeramicBeam (structure)Laser beamsOptoelectronicsLaser beam qualityFiber laserLight beamCrystalliteSolid-state laserLaser power scalingOptical powerElectricity generationOptical materialsOptical fiberRefractive indexSemiconductor laser theoryElectrical efficiencyEnergy conversion efficiencyMaterials processingLaser pumpingSolid State Laser TechnologiesPhotorefractive and Nonlinear OpticsAdvanced Fiber Laser Technologies