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Second-order optical nonlinearity of 10-μm-thick periodically poled LiNbO_(3) films

机译:厚度为10μm的周期性极化LiNbO_(3)薄膜的二阶光学非线性

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摘要

We report on the fabrication and Χ~((2)) measurements of thin ~10-μm-thick films of periodically poled LiNbO_(3), obtained by crystal ion slicing. The d_(33) optical coefficient in the films is probed by sum-frequency generation with a short-pulse laser source at 1550 nm and compared with that of the bulk. Efficient, room-temperature TM(ω, m=0)-to-TM(ω+ω, m=0) mode conversion is obtained in the films. These measurements show that domain periodicity is preserved during ion implantation and that the thin films have bulklike nonlinearity and material dispersion.
机译:我们报告了通过晶体离子切片获得的周期性极化的LiNbO_(3)的〜10μm厚薄膜的制备和X〜((2))测量。薄膜中的d_(33)光学系数是通过使用1550 nm的短脉冲激光源以总和频率产生的方式进行探测的,并与整体进行比较。在薄膜中获得高效的室温TM(ω,m = 0)-TM(ω+ω,m = 0)模式转换。这些测量表明,在离子注入过程中保留了畴周期性,并且薄膜具有块状非线性和材料分散。

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