Periodically poled ridge waveguides in KTP for second harmonic generation in the UV regime
Periodically poled ridge waveguides in KTP for second harmonic generation in the UV regime
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DOI：
10.1364/oe.26.028827
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发表时间：
2018-10-29
期刊：
影响因子：
3.8
通讯作者：
Silberhorn, Christine
中科院分区：
文献类型：
--
作者：
Eigner, Christof;Santandrea, Matteo;Silberhorn, Christine
波导电路在现代集成光学中发挥着关键作用，并为量子光学的可扩展性提供了一种有吸引力的方法。我们报告了 z 切磷酸氧钛钾（KTiOPO4 或 KTP）中的周期性极化脊形波导，这种材料由于其独特的色散特性，最近受到越来越多的关注。使用精确的金刚石刀片切割锯在靠近表面的铷交换 KTP 中定义脊线。我们制造了 800 nm 左右的单模脊形波导，其宽度为 1.9-3.2 μm，并促进了 792 nm 至 396 nm 的 11 型二次谐波生成，效率高达 6.6 %/W.cm(2)。二次谐波过程的温度依赖性被发现为 53 pm/K。较低的温度依赖性和较高的非线性转换效率使我们的波导非常适合经典非线性集成光学和集成量子网络应用中的未来操作。 (C) 2018 年美国光学协会根据 OSA 开放获取出版协议条款
Waveguide circuits play a key role in modern integrated optics and provide an appealing approach to scalability in quantum optics. We report on periodically poled ridge waveguides in z-cut potassium titanyl phosphate (KTiOPO4 or KTP), a material that has recently received growing interest due to its unique dispersion properties. Ridges were defined in surface-near rubidium-exchanged KTP by use of a precise diamond-blade dicing saw. We fabricated single-mode ridge waveguides at around 800 nm which exhibit widths of 1.9-3.2 mu m and facilitated type-11 second harmonic generation from 792 nm to 396 nm with high efficiency of 6.6 %/W.cm(2). Temperature dependence of the second harmonic process was found to be 53 pm/K. The low temperature dependence and high nonlinear conversion efficiency make our waveguides ideally suited for future operations in classical nonlinear integrated optics and integrated quantum networking applications. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement