Non-specular reflection of a narrow spatially phase-modulated Gaussian beam
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Published:2022-10-27
Issue:11
Volume:39
Page:2073
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ISSN:1084-7529
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Container-title:Journal of the Optical Society of America A
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language:en
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Short-container-title:J. Opt. Soc. Am. A
Author:
Dadoenkova Yuliya S.ORCID,
Glukhov Igor A.1ORCID,
Moiseev Sergey G.12ORCID,
Bentivegna Florian F. L.ORCID
Affiliation:
1. Ulyanovsk State University
2. Kotelnikov Institute of Radio Engineering and Electronics of the Russian Academy of Sciences, Ulyanovsk Branch
Abstract
The lateral and angular Goos–Hänchen shifts undergone upon reflection on a dielectric plate by a spatially phase-modulated Gaussian beam are derived. It is shown that the amplitude and direction of both lateral and angular shifts are very sensitive to the degree of spatial phase modulation of the incident beam, so that such modulation thus provides a means to control those shifts. It is also shown that the modulation incurs some beam reshaping upon reflection. Analytical calculations of the lateral shift are found to be in good agreement with numerical simulations of beam propagation before and after reflection. In these simulations, the required spatial transverse phase modulation is achieved by focusing a microwave Gaussian beam onto the dielectric plate with a non-spherical lens or a flat-surfaced thin lamella exhibiting a suitable gradient of its refractive index. The optimal parameters governing the spatial phase modulation are discussed to achieve: (i) enhancement of the lateral shift of a spatially phase-modulated beam in comparison to that of a non-modulated beam and (ii) simultaneous large values of reflectivity and of the lateral shift, while keeping the reshaping of the reflected beam to a minimum.
Funder
Ecole Nationale d’Ingénieurs de Brest
Conseil Régional de Bretagne
Collège de France
French Embassy in Russia
Ministry of Science and Higher Education of the Russian Federation
Publisher
Optica Publishing Group
Subject
Computer Vision and Pattern Recognition,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
1 articles.
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