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Surface periodic domain structures for waveguide applications

机译:波导应用的表面周期域结构

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We report the results of fabrication and investigations of surface periodic domain structures created by a set of quasi-point e-beam irradiations both on the Y- and X-cuts of LiNbO3, and on Ti:LiNbO3 and Zn:LiNbO3 planar waveguides. Domain gratings with spatial periods from 4.75 to 7.25 ;C;m were formed by a 25-keV e-beam. Doses from 500 to 2000 ;C;C/cm2 were used for different structures to estimate optimal fabrication conditions. The investigations allowed the visualization of the formed surface domain structures, estimation of their uniformity, and determination of waveguide generation of the second optical harmonic. The surface structures can be used in optical devices for the realization of quasi-phasematched frequency conversion, which includes the creation of compact radiation sources based on waveguides.
机译:我们报告了在LiNbO 3 的Y和X切口以及Ti:LiNbO上的一组准点电子束辐照产生的表面周期域结构的制造和研究结果。 3 和Zn:LiNbO 3 平面波导。由25keV电子束形成空间周期为4.75至7.25; C; m的畴光栅。剂量为500至2000; C; C / cm 2 用于不同的结构,以估算最佳制造条件。研究允许可视化所形成的表面域结构,估计其均匀性,并确定第二光学谐波的波导生成。该表面结构可用于光学设备中以实现准相位匹配的频率转换,包括基于波导的紧凑型辐射源的创建。

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