Real-time calibration of laser absorption spectrometer using spectral correlation performed with an in-line gas cell

Clinton J. Smith, Wen Wang, Gerard Wysocki

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

A real-time drift correction and calibration method using spectral correlation based on a revolving in-line gas cell for laser-based spectroscopic trace-gas measurements has been developed and evaluated experimentally. This technique is relatively simple to implement in laser spectroscopy systems and assures long-term stability of trace-gas measurements by minimizing the effects of external sources of drift in realtime. Spectroscopic sensitivity sufficient for environmental monitoring and effective drift suppression has been achieved for long-term measurements of CO2 with a quantum cascade laser based spectrometer.

Original languageEnglish (US)
Pages (from-to)22488-22503
Number of pages16
JournalOptics Express
Volume21
Issue number19
DOIs
StatePublished - Sep 23 2013

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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