Applied Physics Letters · 1977 · 53 citations · 2 references
Materials ScienceMaterials EngineeringOptical MaterialsFloating-zone TechniqueSelective EvaporationEngineeringFiber StructureCrystal Growth TechnologyHigh-performance FiberApplied PhysicsChemistryCr ConcentrationMicrostructure
Single-crystal Cr-doped Al2O3 fibers can be grown by a floating-zone technique from small source rods locally melted at the end by a CO2 laser. By using the same laser to melt and regrow only the surface of the fiber, the Cr concentration in this surface layer can be reduced by a factor of 100 or more by selective evaporation.
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