Abstract
AbstractThis article presents a new linear calibration‐free wavelength modulation spectroscopy (LCF‐WMS) technique for gas sensing. By combining the natural logarithms of the transmitted intensity and background signals, this technique eliminates the effects of the intensity, intensity modulation, and the modulation phase to obtain integrable harmonic signals along the line‐of‐sight and thus realize calibration‐free measurements. To illustrate the validity of the LCF‐WMS technique, it was applied to measurement of the water vapor concentration in air at ambient temperature. Because of its specific features of line‐of‐sight integrability and baseline independence, this method will be advantageous in absorption tomography and high‐pressure applications.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
