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7 October 2014 Enhanced backscatter of optical beams reflected in atmospheric turbulence
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Optical beams propagating through the atmosphere acquire phase distortions from turbulent fluctuations in the refractive index. While these distortions are usually deleterious to propagation, beams reflected in a turbulent medium can undergo a local recovery of spatial coherence and intensity enhancement referred to as enhanced backscatter (EBS). Using simulations, we investigate the EBS of optical beams reflected from mirrors, corner cubes, and rough surfaces, and identify the regimes in which EBS is most distinctly observed. Standard EBS detection requires averaging the reflected intensity over many passes through uncorrelated turbulence. Here we present an algorithm called the “tilt-shift method” which allows detection of EBS in static turbulence, improving its suitability for potential applications.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
W. Nelson, J. P. Palastro, C. Wu, and C. C. Davis "Enhanced backscatter of optical beams reflected in atmospheric turbulence", Proc. SPIE 9224, Laser Communication and Propagation through the Atmosphere and Oceans III, 922411 (7 October 2014);


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