Dynamic control of refractive index during pulsed-laser-deposited waveguide growth
Dynamic control of refractive index during pulsed-laser-deposited waveguide growth
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DOI：
10.1364/ome.7.004073
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发表时间：
2017-11-01
影响因子：
2.8
通讯作者：
Mackenzie, Jacob I.
中科院分区：
文献类型：
--
作者：
Grant-Jacob, James A.;Beecher, Stephen J.;Mackenzie, Jacob I.
设计波导的光学特性对于优化其导光模式特性是重要的。在这里，我们记录的动态控制的折射率和组成的结晶膜，通过衬底温度，在脉冲激光沉积生长的Er（1%）掺杂的钇镓石榴石上取向的单晶钇铝石榴石。观察到增加的衬底温度以减少生长的膜中的镓含量，折射率相应地降低。我们展示了通过这种技术精确控制折射率的能力，并使用它来生长复杂的多芯晶体波导。我们的研究结果突出了使用脉冲激光沉积来制造具有定制光学特性的晶体薄膜的潜力，从而原位工程无源和有源波导器件。由The Optical Society根据知识共享署名4.0许可证条款发布。本作品的进一步分发必须保留作者和已发表文章的标题、期刊引文和DOI的归属。
Engineering the optical properties of waveguides is important for the optimization of their guided optical mode characteristics. Here, we document the dynamic control of the refractive index and composition of crystalline films, via the substrate temperature, during pulsed-laser-deposition growth of Er(1%)-doped yttrium gallium garnet on -orientated single-crystal yttrium aluminium garnet. An increasing substrate temperature is observed to reduce the gallium content in the grown film, with a corresponding reduction of refractive index. We demonstrate the ability to accurately control the refractive index via this technique and use it to grow a complex multi-core crystal waveguide. Our results highlight the potential of using pulsed laser deposition to fabricate crystal films with bespoke optical properties and thus engineer passive and active waveguide devices in situ. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.