高温富里叶变换红外光谱仪数据的校准与低温校准测量
Applied optics
|August 12, 2025
概括
福利埃变换 (FT) 谱仪校准至少需要两个源. 线性校准是最好的,即使用于推断温度,网状屏幕也会降低MCT和InSb探测器的数据质量.
科学领域:
- 频谱学是一种光谱学.
- 仪器校准仪器的校准
- 探测器物理学的物理
背景情况:
- 里叶变换 (FT) 光谱依赖于使用参考源的准确校准来确定目标温度.
- 将校准数据推算到超出参考点的温度,对检测器响应分析提出了挑战.
- 实验性修改,如网状屏幕,对探测器性能和校准精度的影响需要调查.
研究的目的:
- 评估ABB MR304 FTIR光谱仪的最佳校准方法,使用---电化物 (MCT) 和-化物 (InSb) 探测器.
- 评估线性和二次性合的性能,以推断校准数据到更高的温度.
- 分析网状屏幕对探测器行为的影响以及光谱仪校准的整体质量.
主要方法:
- 使用ABB MR304 FTIR光谱仪与MCT和InSb探测器收集了四个数据集.
- 绘制的辐射与仪器响应,以分析探测器的行为.
- 应用线性和二次性拟合来评估从较低到较高温度的抽取精度.
主要成果:
- 在低波数和低信号时,MCT探测器表现出二次性行为,但其他情况下是线性的.
- 在所有波数中,InSb探测器显示了线性响应.
- 网状屏幕被发现会对校准质量产生负面影响.
结论:
- 线性校准是FT光谱仪数据的首选方法,包括对更高温度进行外推.
- 为了保持最佳的校准质量,应避免使用网状屏幕.
- 探测器线性和安装方法对于在FT光谱学中准确的温度测定至关重要.
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