Document Type
Conference Paper
Publication Date
2-2014
Publication Source
Proceedings of SPIE: Free-space Laser Communication and Atmospheric Propagation XXVI
Abstract
Gaussian beam propagation through a turbulent layer has been studied using a split-step methodology. A modified von Karman spectrum (MVKS) model is used to describe the random behavior of the turbulent media. Accordingly, the beam is alternately propagated (i) through a thin Fresnel layer, and hence subjected to diffraction; and (ii) across a thin modified von Karman phase screen which is generated using the power spectral density (PSD) of the random phase obtained via the corresponding PSD of the medium refractive index for MVKS turbulence.
The random phase screen in the transverse plane is generated from the phase PSD by incorporating (Gaussian) random numbers representing phase noise. In this paper, numerical simulation results are presented using a single phase screen whereby the phase screen is located at an arbitrary position along the propagation path. Specifically, we examine the propagated Gaussian beam in terms of several parameters: turbulence strength, beam waist, propagation distance, and the incremental distance for Fresnel diffraction for the case of extended turbulence. Finally, on-axis temporal statistics (such as the mean and variance) of the amplitude and phase of the propagated field are also derived.
Inclusive pages
897102-1 to 897102-16
ISBN/ISSN
0277-786X
Document Version
Published Version
Copyright
Copyright © 2014, Society of Photo-optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited.
Publisher
Society of Photo-optical Instrumentation Engineers
Place of Publication
San Francisco, CA
Volume
8971
Peer Reviewed
yes
eCommons Citation
Chatterjee, Monish Ranjan and Mohamed, Fathi H.A., "Investigation of Profiled Beam Propagation through a Turbulent Layer and Temporal Statistics of Diffracted Output for a Modified von Karman phase Screen" (2014). Electrical and Computer Engineering Faculty Publications. 350.
https://ecommons.udayton.edu/ece_fac_pub/350
Included in
Computer Engineering Commons, Electrical and Electronics Commons, Electromagnetics and Photonics Commons, Optics Commons, Other Electrical and Computer Engineering Commons, Systems and Communications Commons
Comments
This document is provided for download in compliance with the publisher's policy on self-archiving. Permission documentation is on file.
DOI: http://dx.doi.org/10.1117/12.2033442