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

Difference-frequency-based tunable absorption spectrometer for detection of atmospheric formaldehyde

Not Accessible

Your library or personal account may give you access

Abstract

High-sensitivity detection of formaldehyde (CH2O) at 3.5315 µm (2831.64 cm-1) is reported with a diode-laser-pumped, fiber-coupled, periodically poled LiNbO3 spectroscopic source. This source replaced the Pb–salt diode laser Dewar assembly of an existing tunable diode-laser absorption spectrometer designed for ultrasensitive detection of CH2O. Spectra are recorded with 2f-modulation spectroscopy and zero-air rapid background subtraction. Initial measurements reported here, determined from multiple measurements of a flowing 7.7 parts per billion by volume (ppbv, parts in 109) CH2O in air mixture, indicate replicate precisions as low as 0.24 ppbv.

© 2000 Optical Society of America

Full Article  |  PDF Article
More Like This
First demonstration of a high performance difference frequency spectrometer on airborne platforms

Petter Weibring, Dirk Richter, James G. Walega, and Alan Fried
Opt. Express 15(21) 13476-13495 (2007)

Effective utilization of quantum-cascade distributed-feedback lasers in absorption spectroscopy

Anatoliy A. Kosterev, Robert F. Curl, Frank K. Tittel, Claire Gmachl, Federico Capasso, Deborah L. Sivco, James N. Baillargeon, Albert L. Hutchinson, and Alfred Y. Cho
Appl. Opt. 39(24) 4425-4430 (2000)

Difference frequency generation spectrometer for simultaneous multispecies detection

Petter Weibring, Dirk Richter, J. G. Walega, Lars Rippe, and Alan Fried
Opt. Express 18(26) 27670-27681 (2010)

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