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New Strategies of Diode Laser Absorption Sensors by Wang J. is a nonfiction available to read on EtoBox.

What is New Strategies of Diode Laser Absorption Sensors about?

Diode-laser absorption sensors are advantageous because of their non-invasive nature, fast time response, and in situ measurement capability. New diode lasers, e.g., GaSb-based longer-wavelength (> 2) lasers and vertical-cavity surface-emitting lasers (VCSELs) have recentlyemerged. The objective of this thesis is to take advantage of these new diode lasers and develop new gas-sensing strategies.CO is an important species both as an air pollutant and a key indicator of combustion efficiency. Using (Al)InGaAsSb/GaSb diode lasers operating near 2.3 m, in situ measurements of CO concentration were recorded in both the exhaust (-470 K) and the immediate post-flame zone (1820-1975 K) of an atmospheric-pressure flat-flame burner. Using wavelength-modulation spectroscopy (WMS) techniques, a ~0.1 ppm-m detectivity of CO in the exhaust duct was achieved with a 0.4-s measurement time. For measurements in the iiunediate post-flame zone, quantitative measurements were obtained at fuel/air equivalence ratios down to 0.83 (366-ppm minimum CO concentration) with only an 11-cm beam path. These results enable many important applications, e.g.. ambient air quality monitoring, in situ combustion emis

Who reads New Strategies of Diode Laser Absorption Sensors?

Author

Wang J.

Published

2001

Language

EN

Category

nonfiction

Subjects

Science, Physics, Stem