Translator Disclaimer
Paper
6 February 1997 Approximation to beam propagation in ocean water
Author Affiliations +
Proceedings Volume 2963, Ocean Optics XIII; (1997) https://doi.org/10.1117/12.266469
Event: Ocean Optics XIII, 1996, Halifax, Nova Scotia, Canada
Abstract
Using a modified form of the anomalous diffraction approximation we first derived in closed form an analytic expression for the phase function of Mie scatterers integrated over an inverse power law (Junge) size distribution. A simple analysis explained the apparent singularity seen experimentally at the forward scattering angle. Relationships were derived that related the inverse power law as a function of scattering angle in the near forward direction to the power law of the size distribution. The parameters of the formula are the relative index of refraction and the inverse power of the size distribution. Using the formula and path integrals, we have derived approximate analytic expressions that model laser beam propagation in ocean waters. The effect of strong absorption on beam shape and temporal spreading is accounted for. The results are currently being integrated into a comprehensive model of underwater active imaging systems.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Georges R. Fournier "Approximation to beam propagation in ocean water", Proc. SPIE 2963, Ocean Optics XIII, (6 February 1997); https://doi.org/10.1117/12.266469
PROCEEDINGS
6 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Measurements Of The Phase Function Of Natural Particles
Proceedings of SPIE (December 30 1981)
Analytic phase function for ocean water
Proceedings of SPIE (October 26 1994)
Review of selected oceanic EM/EO scattering problems
Proceedings of SPIE (February 26 2010)
Exact calculation of light scattering from a particle on a...
Proceedings of SPIE (December 18 1992)
Scattering Of Laser Light From Bubbles In Water At Angles...
Proceedings of SPIE (September 27 1984)

Back to Top