在集成波导中可逆激光打印相变光子结构的相变光子结构
Evgenii Menshikov1,2,3, Petr Lazarenko3, Vadim Kovalyuk4,5
1School of Physics and Engineering, ITMO University, St. Petersburg 197101, Russia.
ACS applied materials & interfaces
|July 16, 2024
概括
研究人员在-- (GST) 薄膜中创建了可重写的激光诱导周期性表面结构 (LIPSS). 这些相变LIPSS提供可调节的光子应用程序,具有快速,可逆的表面修改.
科学领域:
- 材料科学 材料科学 材料科学
- 光子学是指光子学的使用方法.
- 纳米技术 纳米技术
背景情况:
- 激光诱导周期性表面结构 (LIPSS) 提供了强大的表面功能.
- 由于可逆相调节,相变材料 (PCM) 能够实现可重写LIPSS.
- 与Ge2Sb2Te5 (GST) 一样,基化物PCM具有非挥发性,光学对比度和快速切换速度.
研究的目的:
- 探索与波导集成的GST薄膜中的相变LIPSS形成.
- 通过激光调来研究LIPSS形态 (周期,填充因子) 的控制.
- 评估这些结构的多循环重写的局限性.
主要方法:
- 在平面和肋线波导上制造GST薄膜.
- 激光照射以诱导周期性表面结构.
- 重写稳定性的形态特征和分析.
主要成果:
- 在GST中证明可控制的阶段变化LIPSS的形成.
- 确定了LIPSS周期和填充因子的调整参数.
- 研究了多循环重写稳定性和限制.
- 在1D波导上展示了LIPSS形成.
结论:
- 在 GST 中的相变 LIPSS 是可调整的集成光子设备的一个有希望的方法.
- 能够控制LIPSS形态和重写的能力为设备设计提供了灵活性.
- 潜在的应用包括可调节的布拉格过器和光脱结构.
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