超敏感光热切换与共振元表面在可见波段的超敏感光热切换
Ying Che1, Tianyue Zhang2, Tan Shi1
1Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China.
Nano letters
|November 16, 2023
概括
研究人员展示了可见光纳米光子设备在连续体 (q-BICs) 中准束状态的积极控制. 这种光热方法使得纳米级光学切换具有高调制深度.
科学领域:
- 纳米光子学 纳米光子学
- 光学开关是指光学开关.
- 光子学是一种光子学.
背景情况:
- 连续体中的准束状态 (q-BICs) 对基于的纳米光子应用至关重要.
- 目前对q-BIC的调方法仅限于红外和THz范围,在可见光谱中效率低.
研究的目的:
- 为了实现在可见光范围内进行纳米级光学切换的q-BICs的积极操纵.
- 引入一种新的光热机制来控制q-BIC共振.
主要方法:
- 利用光热机制在中诱导局部指数扰动.
- 使用光学加热来修改复杂的折射率.
- 研究尖的q-BIC共振对索引扰动的超敏感反应.
主要成果:
- 通过光学加热来证明q-BICs的活跃操纵.
- 通过轻微的强度 (1MW/cm2) 实现明显抑制尖的q-BIC共振.
- 获得了超过80%的反射功率的活性调制深度.
结论:
- 光热方法可以在可见光谱中实现有效的纳米级光学切换.
- 这种方法为动态纳米光子设备提供了一个超敏感的平台.
- 这些发现为基于的先进活性纳米光子应用铺平了道路.
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