18304期计算机3D开机号,Fabrication and Characterization of Er3+:Yb3+ Co―doped Phosphosilica...

摘要：

Fabrication process of efficient Ersup3plus;/sup:Ybsup3plus;/sup cohorbar;doped phosphosilicate fibers by modified chemical vapor depositionlpar;MCVDrpar; was reported. The process is combined with the solution doping technique where the codopant of aluminum is absolutely removed. It shows that the backward deposition process can be adapted to incorporate low viscosity phosphate glass and the reason of the porous layer with a higher phosphorus content which is fabricated in that process was discussed in details. The limiting of the backhorbar;transfer of energy from erbium ions to ytterbium ions and the suppressing the onset of Ybhorbar;ASE are demonstrated by fluorescence spectrum of the perform of phosphosilicate. It shows the efficient energy transfer in this broad absorption, ytterbiumhorbar;sensitized erbium fiber. The performances of doublehorbar;cladding Er3plus;:Yb3plus; cohorbar;doped fiber lasers lpar;EYhorbar;DCFLsrpar; are also studied experimentally. The maximum output power is about 3.2 W by using a 4 m fiber, with a slope efficiency of 30%.

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