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Fraunhofer diffraction description in the approximation of the light field theory

Budak, Vladimir P. and Efremenko, Dmitry S. and Smirnov, Pavel A. (2020) Fraunhofer diffraction description in the approximation of the light field theory. Light and Engineering, 28 (5), pp. 25-30. Znack Publishing House. doi: 10.33383/2020-021. ISSN 0236-2945.

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The wavelength is that natural scale that determines the applicability domains of the ray approximation and the wave approximation of light. If the change of the radiation power spatial density is significant at the wavelength scale, we deal with the light diffraction phenomenon, which is a subject to the wave optics. Let us consider the diffraction phenomenon at the diaphragm. It is possible to distinguish the near zone with significant wave inhomogeneities (i.e. the Fresnel zone) and the far Fraunhofer diffraction zone, in which the wave becomes close to homogeneous (the so-called quasi-homogeneous) and the ray approximation is possible. The problem is that there is no explicit relationship between the radiance of the rays before and after diaphragm. Method for determining the boundary conditions for the radiance in the Fraunhofer zone through the radiance of the incident radiation is proposed in the paper. This approach for computing the radiance field in the Fraunhofer zone can be generalized to other problems of optics, thereby providing the possibility of using computationally efficient ray-approximation-based methods to determine the light fields.

Item URL in elib:https://elib.dlr.de/136891/
Document Type:Article
Title:Fraunhofer diffraction description in the approximation of the light field theory
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Budak, Vladimir P.Moscow Power Engineering Inst., Moscow, RussiaUNSPECIFIEDUNSPECIFIED
Efremenko, Dmitry S.UNSPECIFIEDhttps://orcid.org/0000-0002-7449-5072UNSPECIFIED
Smirnov, Pavel A.Moscow Power Engineering Inst., Moscow, RussiaUNSPECIFIEDUNSPECIFIED
Journal or Publication Title:Light and Engineering
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 25-30
Publisher:Znack Publishing House
Keywords:diffraction, geometrical optics, wave optics, photometry, quasi-heterogeneity
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Optical Technologies and Applications
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Efremenko, Dr Dmitry
Deposited On:29 Oct 2020 11:37
Last Modified:07 Dec 2021 14:35

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