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26 November 1983 Stratospheric Species Measurements With Tunable Diode Laser Absorption Spectroscopy
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A balloon-borne instrument for stratospheric research has been developed with the capability to simultaneously measure several chemically related species in situ, for a full diurnal cycle. The instrument utilizes tunable infrared diode lasers (TDLs) to provide the radiation in selected wavelength regions for sensitive absorption spectroscopy over a one-km round-trip path. The TDL radiation is directed to a remote retroreflector which is lowered 500 m below the instrument gondola. A HeNe laser and coaligned TV camera with CID imaging are used for retroreflector tracking. Currently the instrument operates with two TDLs, and the capability exists to measure four stratospheric species: NO, NO2, 03, and H2O. The number of operating TDLs can be expanded to four, resulting in the possibility of measuring several additional trace species.
© (1983) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robert T Menzies and Christopher R. Webster "Stratospheric Species Measurements With Tunable Diode Laser Absorption Spectroscopy", Proc. SPIE 0438, Tunable Diode Laser Development and Spectroscopy Applications, (26 November 1983);

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