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Design and implementation of flexible laboratory system for beam propagation study through weak atmospheric turbulence

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Rickenstorff, Carolina and Rodrigo, José A. and Alieva, Tatiana Krasheninnikova (2016) Design and implementation of flexible laboratory system for beam propagation study through weak atmospheric turbulence. In Optical Modelling and Design IV. Proceedings of SPIE (9889). Spie-Int Soc Optical Engineering. ISBN 978-1-5106-0134-5

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Official URL: http://dx.doi.org/10.1117/12.2222304




Abstract

Different applications such as astronomy, remote optical sensing and free space optical communications, among others, require both numerical and laboratory experimental simulations of beam propagation through turbulent atmosphere prior to an outdoor test. While rotating phase plates or hot chambers can be applied to such studies, they do not allow changing the atmospheric conditions and the propagation distance in situ. In contrast, the spatial light modulators (SLMs) are a flexible alternative for experimental turbulence simulation. In this work we consider an experimental setup comprising two SLMs for studying laser beam propagation in weak atmospheric turbulence. The changes of atmospheric conditions and propagation distances are properly achieved by the adjustment of the phase screens and the focal distances of digital lenses implemented in both SLMs. The proposed system can be completely automatized and all its elements are in fixed positions avoiding mechanical misalignment. Its design, propagation distance and atmospheric condition adjustment are provided. The setup performance is verified by numerical simulation of Gaussian beam propagation in the weak turbulence regime. The obtained parameters: scintillation index, beam wander and spreading are compared to their theoretical counterparts for different propagation distances and atmospheric conditions.


Item Type:Book Section
Additional Information:

© 2016 SPIE.
ISSN: 0277-786X
Conference on Optical Modelling and Design IV (Brussels, Brasil. 1016).
Spanish Ministerio de Economía y Competitividad is acknowledged for funding the project TEC2014-57394-P. C. Rickenstorff gratefully acknowledges the CONACyT postdoctoral grant 234821.

Uncontrolled Keywords:Atmospheric turbulence simulator; Propagation through random medium; Opto- lectronic system design.
Subjects:Sciences > Physics > Optics
ID Code:46053
Deposited On:31 Jan 2018 19:33
Last Modified:02 Feb 2018 09:35

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