TurbulenceApplications ranging from lidar to free-space laser communications to directed energy require ever-better ways to overcome the distortions of a churning atmosphere. Emerging wavefront-sensing technologies are stepping up to the challenge.Abbie T. WatnikDennis F. Gardner...
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deep learning algorithm for extreme speed. It has also been demonstrated in a scanning mode to improve noise robustness[190]. The method has superior performance and promises a broader range of applications. Apart from wavefront sensing, several efforts have been exploring advanced characterization ...
Turbulence is a complex and chaotic state of fluid motion. Atmospheric turbulence within the Earth’s atmosphere poses fundamental challenges for applications such as remote sensing, free-space optical communications and astronomical observation due to its rapid evolution across temporal and spatial scales...
wavefront sensing of atmosphere turbulence ∗ Zhang Lan-Qiang 1)2)3) Gu Nai-Ting 1)2) Rao Chang-Hui 1)2)† 1) ( Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China ) 2) ( Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 61...
Atmospheric turbulence is a major limitation to optical high resolution imaging systems observing through the lower atmosphere. In most conditions, it limits the angular resolution to about one arcsecond, which is the resolution of a small 10 cm telescope operating in the visible. From a theoretical...
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Adaptive optics (AO) is critical in astronomy, optical communications and remote sensing to deal with the rapid blurring caused by the Earth’s turbulent atmosphere. But current AO systems are limited by their wavefront sensors, which need to be in an optical plane non-common to the science ...
An improved apparatus for sensing wavefront distortions in a return beam of light, such as a beam returned through a turbulent atmosphere or through an imperfect optical system from a radiating or ill
Deep learningDeep learning neural networks are used for wavefront sensing and aberration correction in atmospheric turbulence without any wavefront sensor (i.e. reconstruction of the wavefront aberration phase from the distorted image of the object). We compared and found the characteristics of the ...