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Adaptive Optics Progress

Adaptive Optics Progress
Books from same Author: Lefteris Tyler
Books from same Publisher: Scitus

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Description

Adaptive optics (AO) is a technology used to improve the performance of optical systems by reducing the e?ect of wave front distortions: it aims at correcting the deformations of an incoming wave front by deforming a mirror in order to compensate for the distortion. It is used in astronomical telescopes and laser communication systems to remove the e?ects of atmospheric distortion, in microscopy, optical fabrication and in retinal imaging systems to reduce optical aberrations. Adaptive optics works by measuring the distortions in a wave front and compensating for them with a device that corrects those errors such as a deformable mirror or a liquid crystal array. Although active optics can ensure that a telescope's main mirror always retains a perfect shape, the turbulence of the Earth's atmosphere distorts images obtained at even the best sites in the world for astronomy. Astronomers have turned to a method called adaptive optics. Sophisticated, deformable mirrors controlled by computers can correct in real-time for the distortion caused by the turbulence of the Earth's atmosphere, making the images obtained almost as sharp as those taken in space. Adaptive optics allows the corrected optical system to observe ?ner details of much fainter astronomical objects than is otherwise possible from the ground. Active and adaptive optics technology has emerged from the laboratory and is being applied to improve the performance of optical imaging and laser systems. In the last few years, development of both systems and components has accelerated. Many new concepts and devices have appeared, among which are high-performance deformable mirrors, new types of wave front sensors, and more sophisticated wave front processing algorithms. Equally important, a better understanding of the system design aspects of adaptive optics has been reached, particularly of the need for optimizing each system according to its application. Current developments in adaptive optics for ground-based astronomy include the use of IR wavelengths, partial wave front compensation using natural guide stars, and the use of laser guide stars to allow all-sky coverage with full compensation at visible wavelengths. The book entitled Adaptive Optics Progress o?ers the applications of adaptive optics throughout the ?elds of communication as well as its original usages in astronomy and beam propagation.

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General Information
Author(s)Lefteris Tyler
PublisherScitus
ISBN9781681172088
Pages338
BindingHardbound
LanguageEnglish
Publish YearFebruary 2017
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