Tomographic imaging of fluid flows by the use of two-tone frequency-modulation spectroscopy
Author
Summary, in English
Diode laser absorption measurements obtained with two-tone frequency-modulation spectroscopy (TTFMS) are combined with tomography to produce spatially resolved quantitative images of fluid flows. The high sensitivity, good accuracy, and high stability of TTFMS absorption measurements permit optical-absorption tomography to be performed with low noise on extremely weakly absorbing objects. The method is demonstrated on a small oxygen flow with a GaAlAs diode laser operating near 760 nm and with an absorption sensitivity of 1:106.
Department/s
Publishing year
1994
Language
English
Pages
1489-1491
Publication/Series
Optics Letters
Volume
19
Issue
18
Full text
- Available as PDF - 480 kB
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Document type
Journal article
Publisher
Optical Society of America
Topic
- Atom and Molecular Physics and Optics
Status
Published
ISBN/ISSN/Other
- ISSN: 0146-9592