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通过镁离子内扩散方法．实现了沿α轴生长的Ｎｄ：ＭｇＯ：ＬｉＮｂＯ３单晶光纤具有阶跃折射率分布的芯－包层波导结构。并研制成ＬＤ泵浦的该包层单晶光纤室温腔外倍频激光器，在１９ｍＷ的１．０６４μｍ入射光功率下，得到１０μＷ的０．５３２μｍ的连续绿光输出。
Through the magnesium ion diffusion method. A core-clad waveguide structure having a step index profile of the Nd: MgO: LiNbO3 single crystal grown along the α axis is realized. The LD-pumped at room temperature OCT laser was developed to obtain 10μW 0.532μm continuous green light output at 19mW 1.064μm incident light power.