Frequency stabilization of a diode laser to absorption lines of water vapor in the 944-nm wavelength region

2001 ◽  
Vol 40 (4) ◽  
pp. 525 ◽  
Author(s):  
Anthony L. Cook
Keyword(s):  
Water Vapor ◽  
Diode Laser ◽  
Wavelength Region ◽  
Frequency Stabilization ◽  
Absorption Lines

Absolute frequency stabilization of an extended-cavity diode laser against Doppler-free H_2^17O absorption lines at 1384 μm

2009 ◽  
Vol 34 (20) ◽  
pp. 3107 ◽  
Author(s):  
Gianluca Galzerano ◽  
Eugenio Fasci ◽  
Antonio Castrillo ◽  
Nicola Coluccelli ◽  
Livio Gianfrani ◽  
...  
Keyword(s):  
Diode Laser ◽  
Frequency Stabilization ◽  
Absorption Lines ◽  
Absolute Frequency ◽  
Extended Cavity

Measurement of Gas Temperature in a Large Enclosure by Tunable Diode Laser Absorption Spectroscopy

2013 ◽  
Author(s):  
Jun Tian ◽  
Zulong Hao ◽  
Yu Yu ◽  
Huagui Li ◽  
Jianjun He ◽  
...  
Keyword(s):  
Water Vapor ◽  
Diode Laser ◽  
Absorption Spectroscopy ◽  
Hot Water ◽  
Tunable Diode Laser ◽  
Absorption Lines ◽  
Laser Absorption Spectroscopy ◽  
Convection And Heat Transfer ◽  
Laser Absorption ◽  
Diode Laser Absorption

In order to study the mechanism of mixed-convection and heat transfer when injecting hot water vapor into the containment, it is necessary to measure temperature distribution inside it. To overcome the shortcomings of traditional thermocouples technique during injection experiments of water vapor, a new temperature measurement method based on tunable diode laser absorption spectroscopy (TDLAS) was proposed in this paper. The TDLAS technique is based on the detection of H2O absorption lines with different energies of low levels, and the spectra can be recorded using a laser detector. The data of H2O absorption lines were selected from HITRAN2004 to obtain a pair of optimal absorption lines. A preliminary design of experimental system was presented as well as parameters selection. According to the problems when applying TDLAS, the corresponding solutions were proposed.

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