长波红外计算多光谱超表面和光谱重建方法
Shang Wang1, Lidan Lu1, Lianqing Zhu2
1School of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing, 100192, China.
Scientific reports
|July 2, 2025
概括
我们开发了一种新的光子晶体超表面,用于长波红外光谱. 这种先进的系统提供了高透射率和光谱区分,使下一代便携式光谱设备成为可能.
科学领域:
- 光学和光子学 在光学和光子学.
- 红外光谱学 红外光谱学
- 超材料是指一种超材料.
背景情况:
- 超表面为高级应用提供可调节的光学特性.
- 长波红外光谱 (LWIR) 对于各种传感和成像任务至关重要.
- 当前的系统在光谱歧视和可移植性方面经常面临限制.
研究的目的:
- 为了展示LWIR应用程序的计算多谱元表面.
- 为了实现高光学性能和光谱歧视.
- 为下一代红外系统开发硬件算法联合设计.
主要方法:
- 设计并模拟了一个3x3光子晶体阵列超表面,在8-11.5μm范围内运行.
- 评估光学性能,包括峰值传输率和宽带能源利用率.
- 使用通道间传输率相关性评估光谱歧视.
- 研究了超表面的角依赖性.
- 开发了一个光谱重建深度学习网络.
主要成果:
- 实现了75.8%的峰值传输率和41.37%的宽带能源利用效率.
- 证明了卓越的光谱区分,频道间传输率相关系数为0.17.
- 深度学习网络在光谱重建中实现了2.86的平均平方误差.
- 展示了集成超级网格探测器的潜力,其像素距离低于100nm.
结论:
- 开发的超表面架构为LWIR多谱传感提供了一个强大的平台.
- 硬件-算法联合设计可以提高光谱系统的性能和小型化.
- 这项工作代表了便携式光谱应用的重大进步.
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