Refractive-index and absorption fluctuations in the infrared caused by temperature, humidity, and pressure fluctuations

R. J. Hill; S. F. Clifford; R. S. Lawrence

doi:10.1364/JOSA.70.001192

Journal of the Optical Society of America
Vol. 70,
Issue 10,
pp. 1192-1205
(1980)
•https://doi.org/10.1364/JOSA.70.001192

Refractive-index and absorption fluctuations in the infrared caused by temperature, humidity, and pressure fluctuations

R. J. Hill, S. F. Clifford, and R. S. Lawrence

Not Accessible

Your library or personal account may give you access

Get PDF
Email
Share
Get Citation
Copy Citation Text
R. J. Hill, S. F. Clifford, and R. S. Lawrence, "Refractive-index and absorption fluctuations in the infrared caused by temperature, humidity, and pressure fluctuations," J. Opt. Soc. Am. 70, 1192-1205 (1980)

Export Citation
- BibTex
- Endnote (RIS)
- HTML
- Plain Text
Citation alert
Save article

Abstract

The dependence of fluctuations in atmospheric absorption and refraction upon fluctuations in temperature, humidity, and pressure is found for infrared frequencies. This dependence has contributions from line and continuum absorption and from anomalous refraction by water vapor. The functions that relate these fluctuations are necessary for evaluating degradation of electromagnetic radiation by turbulence. They are computed for a given choice of mean atmospheric conditions and graphed as functions of frequency in the wavelength range 5.7 μm to radio waves. It is found that turbulent fluctuations in total pressure give a negligible contribution to absorption and refraction fluctuations. Humidity fluctuations dominate absorption fluctuations, but contributions by temperature and humidity affect refraction fluctuations. Sufficiently strong humidity fluctuations can dominate the refraction fluctuations for some infrared frequencies but not for visible frequencies. We examine the variance of log amplitude for scintillation of infrared light to determine whether absorption or refraction fluctuations dominate under several conditions.

Full Article | PDF Article

More Like This

Effects of temperature and humidity fluctuations on the optical refractive index in the marine boundary layer

Carl A. Friehe, J. C. La Rue, F. H. Champagne, C. H. Gibson, and G. F. Dreyer
J. Opt. Soc. Am. 65(12) 1502-1511 (1975)

Aerosol spectrometry in the infrared

Hugh R. Carlon
Appl. Opt. 19(13) 2210-2218 (1980)

Mass spectrometry of ion-induced water clusters: an explanation of the infrared continuum absorption

Hugh R. Carlon and Charles S. Harden
Appl. Opt. 19(11) 1776-1786 (1980)

Previous Article Next Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (1)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (87)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

	Lorentzian	Van Vleck–Weisskopf	Gross
g	$\frac{α_{i}}{{(ν_{i} - ν)}^{2} + α_{i}^{2}}$	$\frac{ν}{ν_{i}} (\frac{α_{i}}{{(ν_{i} + ν)}^{2} + α_{i}^{2}} + \frac{α_{i}}{{(ν_{i} - ν)}^{2} + α_{i}^{2}})$	$\frac{4 ν^{2} α_{i}}{{(ν_{i}^{2} - ν^{2})}^{2} + 4 ν^{2} α_{i}^{2}}$
f	$\frac{ν_{i} - ν}{{(ν_{i} - ν)}^{2} + α_{i}^{2}}$	$\frac{α_{i}^{2} / ν_{i} + ν_{i} + ν}{{(ν_{i} + ν)}^{2} + α_{i}^{2}} + \frac{α_{i}^{2} / ν_{i} + ν_{i} - ν}{{(ν_{i} - ν)}^{2} + α_{i}^{2}}$	$\frac{2 ν_{i} (ν_{i}^{2} - ν^{2})}{{(ν_{i}^{2} - ν^{2})}^{2} + 4 ν^{2} α_{i}^{2}}$
$\frac{α}{g} \frac{\partial g}{\partial α}$	$\frac{{(ν_{i} - ν)}^{2} - α_{i}^{2}}{{(ν_{i} - ν)}^{2} + α_{i}^{2}}$	$1 - 4 α_{i}^{2} \frac{D_{+}^{2} + D_{+} D_{-} + D_{-}^{2}}{D_{+} D_{-} (D_{+} + D_{-})}$	$\frac{{(ν_{i}^{2} - ν^{2})}^{2} - 4 ν^{2} α_{i}^{2}}{{(ν_{i}^{2} - ν^{2})}^{2} + 4 ν^{2} α_{i}^{2}}$
$\frac{α}{f} \frac{\partial f}{\partial α}$	$\frac{- 2 α_{i}^{2}}{{(ν_{i} - ν)}^{2} + α_{i}^{2}}$	$2 α_{i}^{2} \frac{D_{+} D_{-} (D_{+} + D_{-}) + (α_{i}^{2} + ν_{i}^{2}) (D_{+}^{2} + D_{-}^{2}) + ν_{i} ν (D_{+}^{2} - D_{-}^{2})}{D_{+} D_{-} [(α_{i}^{2} + ν_{i}^{2}) (D_{+} + D_{-}) - ν_{i} ν (D_{+} - D_{-})]}$	$\frac{- 8 ν^{2} α_{i}^{2}}{{(ν_{i}^{2} - ν^{2})}^{2} + 4 ν^{2} α_{i}^{2}}$

Abstract

Cited By

Figures (1)

Tables (1)

Equations (87)

Journal of the Optical Society of America