1 December 1989 Spectral Measurements Of Atmospheric OH And O2 NIR Airglow With A Michelson FTS And InGaAs Detector
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Proceedings Volume 1145, 7th Intl Conf on Fourier Transform Spectroscopy; (1989) https://doi.org/10.1117/12.969630
Event: Seventh International Conference on Fourier and Computerized Infrared Spectroscopy, 1989, Fairfax, VA, United States
Abstract
Recent developments and the integration of an InGaAs detector with a precision, compact Michelson interferometer have provided a very sensitive, reliable, and portable measurement tool for studying near infrared upper atmospheric emissions. Spectrically resolved and calibrated line intensity measurements of major portions of the Δν = 2 and the Δν = 3 band sequences of the OH Meinel airglow emissions are obtainable from ground based sites. Typically, the spectrometer provides signal-to-noise ratios of 50/1 in one minute measurement time. Time resolved rotational OH temperatures and therefore ambient temperatures corresponding to the 80 to 95 Km OH emission region can be obtained from the data. Also the metastable excited state (alAg) of the molecular 02 (0,0) band at 1.27 pm and the (0,1) band at 1.58 pm are measurable. It is even possible to observe the OH and 02 emissions during the twilight corresponding to sun illuminated conditions at the emission altitudes if spectral discrimination and background suppression techniques are applied to reduce the unwanted effects of scattered solar radiation. Thus, continuous measurements of the emissions can be performed during the daytime to nighttime transition and throughout the night.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ronald Huppi, Ronald Huppi, Joseph Kristl, Joseph Kristl, Thomas Hudson IV, Thomas Hudson IV, } "Spectral Measurements Of Atmospheric OH And O2 NIR Airglow With A Michelson FTS And InGaAs Detector", Proc. SPIE 1145, 7th Intl Conf on Fourier Transform Spectroscopy, (1 December 1989); doi: 10.1117/12.969630; https://doi.org/10.1117/12.969630
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