Abstract

There are bands in the 8–14-μm atmospheric window region of the gas phase IR spectra of α- and β-pinenes that are intense enough to allow theoretically the naturally occurring terpenes to be determined in the 100-ppbv level at 1-km path lengths. Because of the broadness of the bands, however, and the relatively intense atmospheric background at their frequencies of 786.5 cm⁻¹ and 880 cm⁻¹, respectively, practical concentration limits for the use of the bands are probably not better than about 1–10 ppmv. Both type C bands have 4-cm⁻¹Q branches which fall at frequencies which are essentially free of any major atmospheric fine structure bands.

© 1979 Optical Society of America

Water cluster interpretation of IR absorption spectra in the 8–14-μm wavelength region

S. H. Suck, J. L. Kassner, and Y. Yamaguchi
Appl. Opt. 18(15) 2609-2617 (1979)

Role of various water clusters in IR absorption in the 8–14-μm window region

S. H. Suck, A. E. Wetmore, T. S. Chen, and J. L. Kassner
Appl. Opt. 21(9) 1610-1614 (1982)

Possibility of hard-target lidar detection of a biogenic volatile organic compound, α-pinene gas, over forest areas

Yasunori Saito, Petter Weibring, Hans Edner, and Sune Svanberg
Appl. Opt. 40(21) 3572-3574 (2001)

Infrared continuum absorption by atmospheric water vapor in the 8–12-μm window

Robert E. Roberts, John E. A. Selby, and Lucien M. Biberman
Appl. Opt. 15(9) 2085-2090 (1976)

Measured and predicted atmospheric transmission in the 4.0–5.3-μm region, and the contribution of continuum absorption by CO₂ and N₂

L. S. Bernstein, D. C. Robertson, J. A. Conant, and B. P. Sandford
Appl. Opt. 18(14) 2454-2461 (1979)