Atmospheric Attenuation In The Infrared Windows

Darrell E. Burch; David A. Gryvnak

doi:10.1117/12.946840

24 March 1970 Atmospheric Attenuation In The Infrared Windows

Darrell E. Burch, David A. Gryvnak

Proceedings Volume 0019, Space Optics I; (1970) https://doi.org/10.1117/12.946840
Event: Space Optics, 1969, Santa Barbara, United States

Abstract

None of the so-called atmospheric windows in the infrared are completely transparent, even in an atmosphere free of haze, fog, dust, or other particulate matter. Absorption by the atmospheric gases occurs because of many, very weak absorption lines in the windows and the extreme wings of very strong lines whose centers are located outside the windows. Most of the absorption lines between the visible and approximately 18 pm result from simultaneous changes in the vibrational and rotational energy levels of the absorbing molecules. At longer wavelengths most of the lines are pure rotational. A few pure rotational H2O lines appear at wavelengths as short as approximately 8 μm. (Ref. 1)

Citation Download Citation

Darrell E. Burch and David A. Gryvnak "Atmospheric Attenuation In The Infrared Windows", Proc. SPIE 0019, Space Optics I, (24 March 1970); https://doi.org/10.1117/12.946840

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