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一个高性能DC-AC信号分离的光探测器用于光热异质成像 (PHI)
Ting Pan1,2,3, Mei-Ling Sa2, Tang-Xiu Li2
1CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Key Laboratory for Natural Medicines of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, People's Republic of China.
The Review of scientific instruments
|December 9, 2025
概括
一种新的直流-交流电 (DC-AC) 分离光二极管探测器被优化为光热异极管成像 (PHI). 这种探测器提供了增强的信号处理和抗噪能力,这对于先进的成像应用至关重要.
科学领域:
- 光学和光子学 在光学和光子学.
- 生物医学成像技术 生物医学成像技术
- 传感器技术 传感器技术
背景情况:
- 光热异构成像 (PHI) 需要专门的探测器来获得最佳的信号.
- 现有的光二极管探测器可能无法完全满足PHI所需的苛刻信号特性和噪声免疫性.
研究的目的:
- 开发和优化为PHI量身定制的直流-交流电 (DC-AC) 分离光二极管探测器.
- 提高PHI系统中的信号处理能力和外部噪声抵抗力.
主要方法:
- 设计了一个单光二极管探测器,具有很大的光敏感区域 (直径5毫米).
- 实现了DC (10^3) 和AC (10^5) 信号通道的独立增强配置.
- 实现了1.6kHz的切断频率和大约5.8MHz的3dB带宽,用于传 impedance 放大器.
主要成果:
- 开发的探测器表现出适合PHI的平面频率响应.
- 独立增强控制允许灵活的信号管理.
- 探测器对外部噪声具有很高的抗性,这是敏感成像的关键因素.
结论:
- 优化的DC-AC分离光二极管探测器有效地满足光热异极管成像的成像要求.
- 这一进步有助于提高PHI实验的性能和可靠性.
- 探测器的设计提供了易于操作和强大的噪声免疫力.
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