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Proceedings Paper

The simulation and experiment research of harmonic signals based on wavelength modulation spectroscopy
Author(s): Dong-sheng Qu; Yan-ji Hong; Guang-yu Wang; Ming-dong Wang
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Paper Abstract

In order to improve the measurement based on the wavelength modulation spectroscopy technology, a new simulation method of harmonic signals is analyzed and studied. After choosing one H2O absorption line (7185.60cm-1), the transmitted laser signals can be simulated using the measured incident laser signals and fitted laser frequency signals. The simulation of harmonic signals can be realized after creating the lock-in amplifier and calibrated using measured second-harmonic signal. The reliability of this method can be verified according to compare the simulation results with experiment results. At last, the application of this method in the flow field diagnosis is analyzed. It can lay the foundation of engineering application based on wavelength modulation spectroscopy.

Paper Details

Date Published: 19 October 2016
PDF: 10 pages
Proc. SPIE 10155, Optical Measurement Technology and Instrumentation, 101551I (19 October 2016); doi: 10.1117/12.2246556
Show Author Affiliations
Dong-sheng Qu, Equipment Academy (China)
Yan-ji Hong, Equipment Academy (China)
Guang-yu Wang, Equipment Academy (China)
Ming-dong Wang, Equipment Academy (China)

Published in SPIE Proceedings Vol. 10155:
Optical Measurement Technology and Instrumentation
Sen Han; JiuBin Tan, Editor(s)

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