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

Autor: Jacques Soutade, Jean-Luc Vérant, Sebastien Paris, A.K. Mohamed, Raphael Vallon, Jason Meyers
Rok vydání: 2010
Předmět:
Antimony
Optical fiber
Physics::Optics
lcsh:Chemical technology
Biochemistry
gas sensor
Analytical Chemistry
law.invention
distributed feedback (DFB)
CO2 monitoring
Mars atmosphere
law
07.07.Df
Laser-Doppler Flowmetry
lcsh:TP1-1185
47.40.Ki
Ultrasonics
Instrumentation
Wind tunnel
tunable diode laser absorption spectroscopy
laser velocimetry
hypersonic flow
Distributed feedback laser
42.55.Px
Mars Exploration Program
Atomic and Molecular Physics
and Optics
07.57.Ty
Physics::Space Physics
Lasers
Semiconductor
Environmental Monitoring
Materials science
Models
Biological
Article
Optics
Computer Simulation
42.62.Fi
Electrical and Electronic Engineering
Tunable diode laser absorption spectroscopy
Spectrometer
business.industry
Spectrophotometry
Atomic
42.79.Qx
Carbon Dioxide
Laser
96.30.Gc
Feasibility Studies
business
Tunable laser
Zdroj: Sensors (Basel, Switzerland)
Sensors, Vol 10, Iss 6, Pp 6081-6091 (2010)
Sensors; Volume 10; Issue 6; Pages: 6081-6091
ISSN: 1424-8220
DOI: 10.3390/s100606081
Popis: 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.
Databáze: OpenAIRE
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