Structured beams in laser refractography applicationsстатья
Информация о цитировании статьи получена из
Scopus
Дата последнего поиска статьи во внешних источниках: 29 июля 2020 г.
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Авторы:
Raskovskaya I.L.,
Rinkevichyus B.S.,
Tolkachev A.V.
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Сборник:
Laser Beams: Theory, Properties and Applications
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Глава в коллективной монографии
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Год издания:
2011
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Место издания:
Nova Science Publishers New York
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Первая страница:
399
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Последняя страница:
413
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Аннотация:
In this chapter, the applications of structured laser beams in laser refractography technology are considered. The basic principles of laser refractography, a new method for diagnostics of optically inhomogeneous media and flows are described. This technology is based on the refraction of the structured laser beams in transparent inhomogeneity, digital registration and computer processing of the refraction pattern. The experimental setup allowed quantitative visualization of the transparent media by using 2D- or 3Drefractograms. The 3D-refractograms are used for visualization of the boundary layer near the hot or cold ball in water that are present. The problem of laser sheet (plane structured laser beam) also cylindrical beam propagation in media with radial variation of the temperature and refractive index is solved and the trajectories of geometrical rays are calculated. The comparison of the parameters for experimental and corresponding calculated refractograms allows recognizing the temperature fields in the boundary layer, i.e., gives quantitative information. The method is modified for studying edge effects and micro layers in liquids and gases. Due to nearly inertialess measurements, laser refractography can be used for diagnostics of fast and transient processes. © 2011 by Nova Science Publishers, Inc. All rights reserved.
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Добавил в систему:
Расковская Ирина Львовна