Accession Number:

AD0753076

Title:

Atmospheric Transmittance, 7-30 Micrometers: Attenuation of CO2 Laser Radiation

Descriptive Note:

Environmental research papers

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA

Personal Author(s):

• McClatchey, R. A.
• Selby, J. E.

Report Date:

1972-10-12

Pagination or Media Count:

78.0

Abstract:

High resolution transmittance curves are presented for the spectral region 320-1400 wave numbers. These spectra are useful as a guide for selecting laser wavelengths for atmospheric propagation studies in this spectral region. In addition, this report provides specific information concerning the attenuation coefficients of 41 CO2 rotational laser lines in the 10.4 micrometer band system v3 to v1. Charts for predicting the atmospheric attenuation of the CO2 laser lines are provided for each of five climatological model atmospheres and two haze models. The current report extends the work presented in two earlier reports on 1 CO laser attenuation in the 1400-2120cm 4.72-7. 14 micrometers region AFCRL-71-0370 and 2 HF and DF laser attenuation in the 2120-3740cm 2.67-4.72 micrometers region AFCRL-72-0312. This report, when combined with the two previous reports described above, provides synthetic spectra for the entire region from 2.67-31.25 micrometers.

Descriptors:

• *INFRARED RADIATION
• INFRARED LASERS
• LIGHT TRANSMISSION
• GAS LASERS
• ATMOSPHERES
• ATTENUATION
• METEOROLOGICAL PHENOMENA

Subject Categories:

• Atmospheric Physics
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE