Abstract

We consider here the beam spread of laser light when it propagates in a random medium. The analysis is given in terms of the coherence function. Explicit results are obtained principally for the region of multiple scatter. In this region, it is shown that the irradiance pattern is always gaussian and that the characteristic beam diameter increases at a rate proportional to z32, where z is the propagation distance. The proportionality constant is determined for an arbitrary index-of-refraction spectrum, and the Kolmogorov spectrum is given as a special case. The results obtained are considered in atmospheric and oceanographic applications.

© 1970 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Asymptotic theory of irradiance fluctuations in a beam propagating in a random medium

Alan M. Whitman and Mark J. Beran
J. Opt. Soc. Am. 65(7) 765-768 (1975)

Asymptotic Theory for Beam Propagation in a Random Medium*

Mark J. Beran and Alan M. Whitman
J. Opt. Soc. Am. 61(8) 1044-1050 (1971)

Propagation of a Finite Beam in a Random Medium*

Mark Beran
J. Opt. Soc. Am. 60(4) 518-521 (1970)

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

Equations (87)

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