Optical Materials Express · 2013 · 22 citations · 18 references
Optical MaterialsEngineeringOptical GlassMechanical EngineeringLaser ApplicationsFiber OpticsYag Crystal FibersHigh-power LasersOptical PropertiesHigh-index GlassesFiber LaserMaterials SciencePhotonicsFiber OpticGlass FiberMultimaterial FiberFiber StructureApplied PhysicsGlass PhotonicsGuided ModesYttrium Aluminium GarnetCrystal Fibers
Yttrium aluminium garnet (YAG) crystal fibers with a core diameter of 40 μm were cladded by high index glasses using the co-drawing laser-heated pedestal growth method. Due to the extremely large cooling rates in the fabrication processes, unexpected and phenomenally large index drops of 0.018 and at least 0.02 were found from the as-grown capillary and the YAG crystal fiber cladding compared with bulk N-SF57’s, respectively. The high-index glass cladding is effective in reducing the number of guided modes, and the intensity profiles of the crystal fiber show there are only four guided modes at 532 nm.
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