Water vapor concentration measurement in air using filament-induced fluorescence spectroscopy

Water vapor fluorescence in air induced by femtosecond laser filaments was systematically investigated. The fluorescence signal intensity was found to be linearly proportional to the water vapor concentration, which opens up the possibility of absolute humidity measurements, even remotely.

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Bibliographic Details
Published in:Optics letters 2012-05, Vol.37 (10), p.1706-1708
Main Authors: Wang, Tie-Jun, Xu, Huailiang, Daigle, Jean-François, Sridharan, Aravindan, Yuan, Shuai, Chin, See Leang
Format: Article
Language:English
Subjects:
Femtosecond
Filaments
Fluorescence
Humidity
Lasers
Spectroscopy
Water vapor
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Description
Summary:Water vapor fluorescence in air induced by femtosecond laser filaments was systematically investigated. The fluorescence signal intensity was found to be linearly proportional to the water vapor concentration, which opens up the possibility of absolute humidity measurements, even remotely.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.37.001706