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Multispecies absorption spectroscopy of detonation events at 100 kHz using a fiber-coupled, time-division-multiplexed quantum-cascade-laser system
A mid-infrared fiber-coupled laser system constructed around three time-division-multiplexed quantum-cascade lasers capable of measuring the absorption spectra of CO, CO , and N O at 100 kHz over a wide range of operating pressures and temperatures is demonstrated. This system is first demonstrated...
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Published in: | Applied optics. Optical technology and biomedical optics 2016-08, Vol.55 (23), p.6256 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Citations: | Items that cite this one |
Online Access: | Get full text |
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Summary: | A mid-infrared fiber-coupled laser system constructed around three time-division-multiplexed quantum-cascade lasers capable of measuring the absorption spectra of CO, CO
, and N
O at 100 kHz over a wide range of operating pressures and temperatures is demonstrated. This system is first demonstrated in a laboratory burner and then used to measure temperature, pressure, and concentrations of CO, CO
, and N
O as a function of time in a detonated mixture of N
O and C
H
. Both fuel-rich and fuel-lean detonation cases are outlined. High-temperature fluctuations during the blowdown are observed. Concentrations of CO are shown to decrease with time for fuel-lean conditions and increase for fuel-rich conditions. |
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ISSN: | 2155-3165 |
DOI: | 10.1364/AO.55.006256 |