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开发用于中红外光热显微镜 (MIP) 的LC非共振探测器

Ting Pan^1,2,3, Tang-Xiu Li², Jian-Ping Yang²

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

一个新的电感器-电容器 (LC) 探测器通过将信号噪声比提高5倍来增强中红外光热 (MIP) 显微镜. 这种优化的探测器提供了平面频率响应和高增益,用于更清晰的MIP成像.

科学领域:

光学和光子学在光学和光子学.
显微镜仪器仪器仪器仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪表仪器仪表仪表仪表仪表仪器仪表仪表仪器仪表仪器仪表仪器仪表仪表仪器仪表仪表仪表仪表仪表仪器仪表仪表仪表仪表仪表仪表仪表仪表仪表

背景情况:

中红外光热显微镜 (MIP) 需要敏感的探测器来进行最佳的成像.
在MIP实验中,现有的探测器可能会限制信号与噪声比 (SNR).

研究的目的:

开发和优化用于MIP显微镜的感应电容 (LC) 非共振光二极管探测器.
为了提高SNR和MIP成像的性能.

主要方法:

设计了一种LC非共振光二极管探测器,具有很大的光敏感区域 (直径5毫米).
嵌入式功能用于平面频率响应,直流-交流分离和单光二极管配置.
针对MIP显微镜的特定信号特征优化了探测器.

主要成果:

在弱交流信号中获得了2.7 × 10^4的高增益.
从4.7kHz到2.1MHz显示出一个宽,平坦的3dB频率响应.
与标准仪器内置探测器相比,MIP成像的SNR增加了大约5倍.

结论:

开发的LC非共振光二极管探测器显著提高了MIP成像性能.
该探测器用户友好,对噪声强大,并符合MIP实验要求.
这一进步为使用MIP显微镜的研究人员提供了宝贵的工具.

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