Modeling of laser beam propagation through turbulence

Fedor V. Shugaev; Ludmila S. Shtemenko; Oksana A. Nikolaeva; Tatiana I. Arsenyan; Natalia A. Suhareva; Anatoly P. Sukhorukov

doi:10.1117/12.2067188

21 October 2014 Modeling of laser beam propagation through turbulence

Fedor V. Shugaev, Ludmila S. Shtemenko, Oksana A. Nikolaeva, Tatiana I. Arsenyan, Natalia A. Suhareva, Anatoly P. Sukhorukov

Author Affiliations +

Proceedings Volume 9242, Remote Sensing of Clouds and the Atmosphere XIX; and Optics in Atmospheric Propagation and Adaptive Systems XVII; 92421O (2014) https://doi.org/10.1117/12.2067188
Event: SPIE Remote Sensing, 2014, Amsterdam, Netherlands

Abstract

Our approach for modeling laser beam propagation through turbulence involves parabolic equation method and results of experimental investigation in laboratory. The analytic solution to the problem of the Gaussian beam propagation through non-uniform gas has been derived. The solution depends on the refracted index, i.e. on the gas density. The density distribution can be found from the Navier-Stokes system. The appropriate solution may be constructed by two ways : (i) as a series in powers of vorticity which is supposed to be small; (ii) with the aid of the parametrix method which includes an iterative procedure. It follows from the solution that acoustic radiation of vortex rings arises. Statistical properties of the propagating beam were found from the solution to the parabolic equation as average over time. In experiments the propagation path was equal to 7 m. The laser beam propagation was accompanied by convection and lateral wind. The frequency of turbulent fluctuations was equal to 2-10 Hz. Phase trajectories were found as well as statistical properties of the beam intensity in turbulent gas flow. The conclusion is as follows. Statistical characteristics traditionally used for the estimation of the laser beam special distortions in the open space transmission channels are to be complemented by the dynamic parameters such as the space of embeddings dimension, characteristic frequencies for the phase trajectories and so on.

Citation Download Citation

Fedor V. Shugaev, Ludmila S. Shtemenko, Oksana A. Nikolaeva, Tatiana I. Arsenyan, Natalia A. Suhareva, and Anatoly P. Sukhorukov "Modeling of laser beam propagation through turbulence", Proc. SPIE 9242, Remote Sensing of Clouds and the Atmosphere XIX; and Optics in Atmospheric Propagation and Adaptive Systems XVII, 92421O (21 October 2014); https://doi.org/10.1117/12.2067188

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE