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

  • Jing Ni
  • , Zhouzhuo Tang
  • , Zihao Liu
  • , Xia Yu*
  • *Corresponding author for this work
  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publicationConference on Spectral Technology and Applications, CSTA 2024
EditorsZhe Wang, Hongbin Ding
PublisherSPIE
ISBN (Electronic)9781510683082
DOIs
StatePublished - 2024
Event2024 Conference on Spectral Technology and Applications, CSTA 2024 - Dalian, China
Duration: 9 May 202411 May 2024

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume13283
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference2024 Conference on Spectral Technology and Applications, CSTA 2024
Country/TerritoryChina
CityDalian
Period9/05/2411/05/24

Keywords

  • Laser spectroscopy
  • biomolecular detection
  • spectrum compensation
  • surface enhanced infrared absorption

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