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Computer Optics, 2016, Volume 40, Issue 4, Pages 431–438 (Mi co236)  

OPTO-IT

Sharp resonant focusing of light by a dielectric cylinder with square cross-section and cube

D. A. Kozlovab, E. S. Kozlovaab, V. V. Kotlyarab

a Samara National Research University, Samara, Russia
b Image Processing Systems Institute f the RAS Branch of the FSRC Crystallography and Photonics RAS, Samara, Russia

Abstract: In this paper a research on conditions for resonance excitation in a homogeneous dielectric cylinder with square cross-section is conducted using a FDTD-method. It is shown that in a cylinder with square cross-section resonant modes similar to whispering gallery modes can be excited, which allows one to reduce the transverse dimensions of the focal spot. FDTD method demonstrates an acceptable accuracy of the resonant mode detection. A similar result is obtained for a cube on a dielectric substrate: it is possible to achieve the reduction of the transverse dimensions of the focal spot by changing the corresponding cube size.

Keywords: dielectric cylinder, resonance, light focusing.

Funding Agency Grant Number
Ministry of Education and Science of the Russian Federation -9498.2016.9
Russian Foundation for Basic Research 14-29-07133__
15-07-01174-
15-37-20723-__
15-47-02492-__
16-29-11698-_
This work was supported by the Ministry of Education and Science of the Russian Federation, the Russian President's grant for support of leading scientific schools (NSH-9498.2016.9) and RFBR 14-29-07133 grants 15-07-01174, 15-37-20723, 15-47 -02,492, 16-29-11698.


DOI: https://doi.org/10.18287/2412-6179-2016-40-4-431-438

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Full text: http://www.computeroptics.smr.ru/.../400401.html
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Received: 07.06.2016
Accepted:29.08.2016

Citation: D. A. Kozlov, E. S. Kozlova, V. V. Kotlyar, “Sharp resonant focusing of light by a dielectric cylinder with square cross-section and cube”, Computer Optics, 40:4 (2016), 431–438

Citation in format AMSBIB
\Bibitem{KozKozKot16}
\by D.~A.~Kozlov, E.~S.~Kozlova, V.~V.~Kotlyar
\paper Sharp resonant focusing of light by a dielectric cylinder with square cross-section and cube
\jour Computer Optics
\yr 2016
\vol 40
\issue 4
\pages 431--438
\mathnet{http://mi.mathnet.ru/co236}
\crossref{https://doi.org/10.18287/2412-6179-2016-40-4-431-438}


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