Related Experiment Video
Updated: Jun 4, 2026

A Multimodal Wide-Field Fourier-Transform Raman Microscope
Published on: December 30, 2025
[Analysis of diffraction in Fourier-transform infrared spectrometer based on step mirrors]
Jian-Guo Fu1, Zhong-Zhu Liang, Jing-Qiu Liang
1State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China. jianguofu1984@163.com
Diffraction
Area of Science:
- Optical spectroscopy
- Spectrometer design
Context:
- Fourier-transform infrared (FTIR) spectrometers utilize step mirrors.
- Diffraction effects can impact spectral data quality.
Purpose:
- To analyze diffraction in FTIR spectrometers with step mirrors.
- To investigate the influence of diffraction on spectrum reconstruction.
Summary:
- Diffraction's impact is minimal when mirror width exceeds 0.5 mm and distance is under 10 cm.
- A noise reduction method for spectrum reconstruction is presented.
Impact:
- Provides insights for designing FTIR spectrometers.
- Aids in optimizing data processing for spectral analysis.
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