Отрывок: When polyester was irradiated by ions Ar++ with the energy 400 keV the absorption coefficient k = 2.54×10- 5 is obtained. The dependences of the maximal intensities inside the focal spot on k was calculated to estimate the influence of material absorption on the focal spot size and to define the conditions of resonant mode generation. The results are presented in figures 5 and 6 for the 60-th and the 30-th modes, respectively. ...
Название : Analysis of dielectric circular cylinder light spot narrowing by whispering gallery modes and influence of material absorption
Авторы/Редакторы : Kozlov, D.A.
Kozlova, E.S.
Kotlyar, V.V.
Ключевые слова : Dielectric cylinder
whispering gallery modes
subwavelength focusing
Дата публикации : 2018
Издательство : Новая техника
Библиографическое описание : Kozlov D.A. Analysis of dielectric circular cylinder light spot narrowing by whispering gallery modes and influence of material absorption / D.A. Kozlov, E.S. Kozlova, V.V. Kotlyar // // Сборник трудов IV международной конференции и молодежной школы «Информационные технологии и нанотехнологии» (ИТНТ-2018) - Самара: Новая техника, 2018. - С.168-174.
Аннотация : We present results of numerical analysis of the diffraction of a plane monochromatic TE-wave on an ideal homogeneous dielectric cylinder with several resonant wavelength scale radii. Two subsequent near-surface maxima of intensity (two focuses) generated at the cylinder output were found on the optical axis. The first subwavelength focus is formed by one of the whispering gallery mode lobes. Its intensity is 50 times the incident light intensity and its full width at the half maximum of the intensity is equal to 0.155 of the incident wavelength. The second focus is two times less in intensity. Its focal spot known as a photonic nanojet is stretched toward the optical axis. The second focus is formed at a distance about the wavelength from the cylinder surface. Its width is equal to 0.44 of the wavelength and its length is two wavelengths. The influence of material absorption on the light focusing is also examined by numerical simulation.
URI (Унифицированный идентификатор ресурса) : http://repo.ssau.ru/handle/Informacionnye-tehnologii-i-nanotehnologii/Analysis-of-dielectric-circular-cylinder-light-spot-narrowing-by-whispering-gallery-modes-and-influence-of-material-absorption-69368
Другие идентификаторы : Dspace\SGAU\20180516\69368
Располагается в коллекциях: Информационные технологии и нанотехнологии

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