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

Development of an IR tunable diode laser absorption spectrometer for trace humidity measurements at atmospheric pressure

Not Accessible

Your library or personal account may give you access

Abstract

The development of a laser diode absorption spectrometer that uses a strong water vapor absorption at 1393 nm is reported. Three spectroscopic techniques were compared in ≈0.4 m of laboratory air, namely, frequency modulation, wavelength modulation, and two-tone frequency modulation spectroscopy. The first two techniques use a single-frequency modulation at 9.2 GHz and 1 kHz, respectively, generated either by a phase modulator operating at 9.2 GHz or injection current modulation at 1 kHz. The two-tone method requires modulation at two frequencies, in this case 9.19 and 9.21 GHz. It is shown that the two-tone method should provide the highest sensitivity for a trace moisture detection system.

© 1999 Optical Society of America

Full Article  |  PDF Article
More Like This
MASERATI: a rocketborne tunable diode laser absorption spectrometer

Franz-Josef Lübken, Florian Dingler, Henrich von Lucke, Joachim Anders, Wolfgang J. Riedel, and Helmut Wolf
Appl. Opt. 38(25) 5338-5349 (1999)

On-line multicomponent trace-gas analysis with a broadly tunable pulsed difference-frequency laser spectrometer

Michael Seiter and Markus W. Sigrist
Appl. Opt. 38(21) 4691-4698 (1999)

Frequency-modulation spectroscopy with blue diode lasers

Ulf Gustafsson, Gabriel Somesfalean, Janis Alnis, and Sune Svanberg
Appl. Opt. 39(21) 3774-3780 (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 (7)

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

Tables (1)

You do not have subscription access to this journal. Article tables 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 (9)

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