Intracavity Raman spectroscopy for industrial stack gas analysis

2004 ◽  
Author(s):  
Troy W. Francisco ◽  
Ronald R. Rich
Keyword(s):  
Raman Spectroscopy ◽  
Gas Analysis ◽  
Stack Gas

Enhanced Sensitivity of Raman Spectroscopy for Tritium Gas Analysis Using a Metal-Lined Hollow Glass Fiber

2015 ◽  
Vol 67 (3) ◽  
pp. 547-550 ◽  
Author(s):  
Simone Rupp ◽  
Timothy M. James ◽  
Helmut H. Telle ◽  
Magnus Schlösser ◽  
Beate Bornschein
Keyword(s):  
Raman Spectroscopy ◽  
Glass Fiber ◽  
Gas Analysis ◽  
Hollow Glass ◽  
Enhanced Sensitivity

scholarly journals A Short Review of Cavity-Enhanced Raman Spectroscopy for Gas Analysis

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1698
Author(s):  
Christian Niklas ◽  
Hainer Wackerbarth ◽  
Georgios Ctistis
Keyword(s):  
Raman Spectroscopy ◽  
Laser Beam ◽  
Gas Sensors ◽  
Optical Sensors ◽  
Lower Cost ◽  
Short Review ◽  
Gas Analysis ◽  
Beam Power ◽  
Laser Beam Power ◽  
Wide Range

The market of gas sensors is mainly governed by electrochemical, semiconductor, and non-dispersive infrared absorption (NDIR)-based optical sensors. Despite offering a wide range of detectable gases, unknown gas mixtures can be challenging to these sensor types, as appropriate combinations of sensors need to be chosen beforehand, also reducing cross-talk between them. As an optical alternative, Raman spectroscopy can be used, as, in principle, no prior knowledge is needed, covering nearly all gas compounds. Yet, it has the disadvantage of a low quantum yield through a low scattering cross section for gases. There have been various efforts to circumvent this issue by enhancing the Raman yield through different methods. For gases, in particular, cavity-enhanced Raman spectroscopy shows promising results. Here, cavities can be used to enhance the laser beam power, allowing higher laser beam-analyte interaction lengths, while also providing the opportunity to utilize lower cost equipment. In this work, we review cavity-enhanced Raman spectroscopy, particularly the general research interest into this topic, common setups, and already achieved resolutions.

scholarly journals Highly Sensitive Gas Analysis by Raman Spectroscopy and its Application.

1997 ◽  
Vol 25 (10) ◽  
pp. 697-701
Author(s):  
Hiroshi YAMAMOTO ◽  
Yukihiro OZAKI
Keyword(s):  
Raman Spectroscopy ◽  
Gas Analysis ◽  
Highly Sensitive
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