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Sensors 2010, 10(6), 6081-6091; doi:10.3390/s100606081
Article

A Compact Tunable Diode Laser Absorption Spectrometer to Monitor CO2 at 2.7 µm Wavelength in Hypersonic Flows

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Received: 21 May 2010; in revised form: 4 June 2010 / Accepted: 8 June 2010 / Published: 17 June 2010
(This article belongs to the Section Physical Sensors)
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Abstract: Since the beginning of the Mars planet exploration, the characterization of carbon dioxide hypersonic flows to simulate a spaceship’s Mars atmosphere entry conditions has been an important issue. We have developed a Tunable Diode Laser Absorption Spectrometer with a new room-temperature operating antimony-based distributed feedback laser (DFB) diode laser to characterize the velocity, the temperature and the density of such flows. This instrument has been tested during two measurement campaigns in a free piston tunnel cold hypersonic facility and in a high enthalpy arc jet wind tunnel. These tests also demonstrate the feasibility of mid-infrared fiber optics coupling of the spectrometer to a wind tunnel for integrated or local flow characterization with an optical probe placed in the flow.
Keywords: gas sensor;tunable diode laser absorption spectroscopy; distributed feedback (DFB); laser velocimetry; CO2 monitoring; hypersonic flow; Mars atmosphere gas sensor; tunable diode laser absorption spectroscopy; distributed feedback (DFB); laser velocimetry; CO2 monitoring; hypersonic flow; Mars atmosphere
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Vallon, R.; Soutadé, J.; Vérant, J.-L.; Meyers, J.; Paris, S.; Mohamed, A. A Compact Tunable Diode Laser Absorption Spectrometer to Monitor CO2 at 2.7 µm Wavelength in Hypersonic Flows. Sensors 2010, 10, 6081-6091.

AMA Style

Vallon R, Soutadé J, Vérant J-L, Meyers J, Paris S, Mohamed A. A Compact Tunable Diode Laser Absorption Spectrometer to Monitor CO2 at 2.7 µm Wavelength in Hypersonic Flows. Sensors. 2010; 10(6):6081-6091.

Chicago/Turabian Style

Vallon, Raphäel; Soutadé, Jacques; Vérant, Jean-Luc; Meyers, Jason; Paris, Sébastien; Mohamed, Ajmal. 2010. "A Compact Tunable Diode Laser Absorption Spectrometer to Monitor CO2 at 2.7 µm Wavelength in Hypersonic Flows." Sensors 10, no. 6: 6081-6091.



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