Low-noise surface-enhanced mid-infrared laser absorption spectroscopy based on spectrum compensation

Jing Ni; Zhouzhuo Tang; Zihao Liu; Xia Yu

doi:10.1117/12.3036796

4 December 2024 Low-noise surface-enhanced mid-infrared laser absorption spectroscopy based on spectrum compensation

Jing Ni, Zhouzhuo Tang, Zihao Liu, Xia Yu

Author Affiliations +

Proceedings Volume 13283, Conference on Spectral Technology and Applications (CSTA 2024); 132832K (2024) https://doi.org/10.1117/12.3036796
Event: Conference on Spectral Technology and Applications (CSTA 2024), 2024, Dalian, China

Abstract

Spectrum compensation methods hold the potential to decrease the limit of detection in absorption spectroscopy. We report a spectrum compensation method for a home-built surface-enhanced mid-infrared laser absorption spectroscopy detection system to reduce the noise of the system. The measurement results of the spectrum compensation method show that the fluctuations in the single beam spectrum covering 1640-977 cm-¹ are smaller. Meanwhile, the dynamic range noise and the detector noise are both reduced by 4 times, the shot noise is reduced by 2 times, and the root-mean-square noise of 100% line is reduced by 1.6 times.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jing Ni, Zhouzhuo Tang, Zihao Liu, and Xia Yu "Low-noise surface-enhanced mid-infrared laser absorption spectroscopy based on spectrum compensation", Proc. SPIE 13283, Conference on Spectral Technology and Applications (CSTA 2024), 132832K (4 December 2024); https://doi.org/10.1117/12.3036796

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