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

Frequency modulation multiplexing for simultaneous detection of multiple gases by use of wavelength modulation spectroscopy with diode lasers

Not Accessible

Your library or personal account may give you access

Abstract

Modulation frequency multiplexing provides a straightforward method, analogous to television or radio broadcasting, for performing simultaneous detection of multiple gases by use of wavelength modulation spectroscopy with diode lasers. When fiber-optic coupled lasers are used, our approach guarantees that all beams transit the same optical path and impinge on the same detector. Each laser is modulated at a different frequency and the detector output is processed by a set of lock-in amplifiers, one for each laser, to measure the absorbance encountered by each laser.

© 1998 Optical Society of America

Full Article  |  PDF Article
More Like This
Frequency modulation and wavelength modulation spectroscopies: comparison of experimental methods using a lead-salt diode laser

David S. Bomse, Alan C. Stanton, and Joel A. Silver
Appl. Opt. 31(6) 718-731 (1992)

Extension of wavelength-modulation spectroscopy to large modulation depth for diode laser absorption measurements in high-pressure gases

Hejie Li, Gregory B. Rieker, Xiang Liu, Jay B. Jeffries, and Ronald K. Hanson
Appl. Opt. 45(5) 1052-1061 (2006)

Low-frequency wavelength modulation spectroscopy with D2 transition of atomic cesium by use of an external-cavity diode laser

Liantuan Xiao, Changyong Li, Qian Li, Suotang Jia, and Guosheng Zhou
Appl. Opt. 39(6) 1049-1052 (2000)

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 (4)

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

Select as filters


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