Results 271 to 280 of about 2,420,038 (307)

Optical Topologies in Turbulence

Optica Imaging Congress 2024 (3D, AOMS, COSI, ISA, pcAOP)
Light can be imbued with a topology, but is the topological invariant immune to turbulence? Here I outline how to find invariants in light's degrees of freedom for noise-free communication through turbulence.
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Measurements of anisotropy in optical turbulence

2017 IEEE Aerospace Conference, 2017
A Hartmann Turbulence Sensor was employed along a 200 meter path over a grassy field to investigate turbulence anisotropy. This sensor was based on a 16″ telescope with a 32 × 32 subaperture array featuring 700 active subapertures and a camera operating as fast as 8000 frames/sec.
Jack E. McCrae, Santasri R. Bose-Pillai, Matthew G. Current, Kevin P. Lee, Steven T. Fiorino   +4 more
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Optical Turbulence in the Atmosphere

2009
Overview: In this chapter we present a brief treatment of atmospheric turbulence as it pertains to velocity fluctuations (classical turbulence), temperature fluctuations, and index of refraction fluctuations, the latter often referred to as optical turbulence.
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Fiber-optic atmospheric turbulence sensor

Optics Letters, 1995
A novel dual-air-gap fiber-optic Mach - Zehnder interferometer is proposed for the direct measurement of the atmospheric optical turbulence structure constant C(n)(2). The shot-noise-limited minimum detectable structure constant is estimated to be 4.5 x 10(-20) m(-2/3), which is more than 2 orders of magnitude below a typical value of 10(-17) m(-2/3 ...
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Optical correlation diagnostics of turbulence

SPIE Proceedings, 1997
Application of the optical correlation method to the studies of structure characteristics of turbulence is considered. The structure function D E ((rho) ) of the dielectric constant is determined by measuring the boundary field transverse coherence function. The experimental results obtained are shown to agree well with the theory.
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Underwater turbulence, its effects on optical wireless communication and imaging: A review

Optics and Laser Technology, 2022
Yalcin Ata, Yahya Baykal, Muhsin Caner Gökçe   +2 more
exaly  

Optical Turbulence

1995
A. C. Newell, V. E. Zakharov
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Optical Turbulence

2009
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Demonstrating 24-hour continuous vertical monitoring of atmospheric optical turbulence

Optics Express, 2023
Timothy Butterley, Richard Wilson, Matthew J Townson   +2 more
exaly  

Optical Turbulence

1984
K. Ikeda, O. Akimoto
openaire   +1 more source