Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Wavelength modulation spectroscopy—digital detection of gas absorption harmonics based on Fourier analysis

Not Accessible

Your library or personal account may give you access

Abstract

This work presents a detailed study of the theoretical aspects of the Fourier analysis method, which has been utilized for gas absorption harmonic detection in wavelength modulation spectroscopy (WMS). The lock-in detection of the harmonic signal is accomplished by studying the phase term of the inverse Fourier transform of the Fourier spectrum that corresponds to the harmonic signal. The mathematics and the corresponding simulation results are given for each procedure when applying the Fourier analysis method. The present work provides a detailed view of the WMS technique when applying the Fourier analysis method.

© 2015 Optical Society of America

Full Article  |  PDF Article
More Like This
Harmonic wavelet analysis of modulated tunable diode laser absorption spectroscopy signals

Hong Duan, Anish Gautam, Benjamin D. Shaw, and Harry H. Cheng
Appl. Opt. 48(2) 401-407 (2009)

Calibration-free wavelength-modulation spectroscopy for measurements of gas temperature and concentration in harsh environments

Gregory B. Rieker, Jay B. Jeffries, and Ronald K. Hanson
Appl. Opt. 48(29) 5546-5560 (2009)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (57)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved