Abstract

Experiments indicate that the variance of irradiance fluctuations of a wave propagating through a turbulent atmosphere saturates with increasing path length or turbulence strength. In addition, many experimental data indicate that the saturation value depends on the path length. In this paper we calculate the variance of the irradiance fluctuations by a method originally proposed by Keller, but we view it in a conceptually different manner. The reason that this method is reconsidered is that it leads to solutions whose validity is essentially independent of distance for the coherent field and average energy flux. Our calculations yield a saturation curve that agrees with the experimental data, with a saturation value that depends on both the wavelength and the length of the propagation path. It also leads to a saturation curve with a pronounced maximum for the case of constant turbulence conditions and variable path length. Finally, the amplitude fluctuations are found to be Rayleigh distributed in the limit of infinite path length.

© 1970 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Log-normal paradox in atmospheric scintillations*

Ting-i Wang and John W. Strohbehn
J. Opt. Soc. Am. 64(5) 583-591 (1974)

Beam-intensity fluctuations in atmospheric turbulence

J. Carl Leader
J. Opt. Soc. Am. 71(5) 542-558 (1981)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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

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 OSA member, or as an authorized user of your institution.

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

Figures (2)

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

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

Equations (52)

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

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