УДК: 535.1 534.2 537.87

Field structure of a spherical wave in the neighborhood of the focus

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Лукашова М.В., Толмачев Ю.А. Структура поля сферической волны в окрестности фокуса // Оптический журнал. 2012. Т. 79. № 2. С. 15–21.

Lukashova M. V., Tolmachev Yu. A. Field structure of a spherical wave in the neighborhood of the focus // Opticheskii Zhurnal. 2012. V. 79. № 2. P. 15–21.

For citation (Journal of Optical Technology):

M. V. Lukashova and Yu. A. Tolmachev, "Field structure of a spherical wave in the neighborhood of the focus," Journal of Optical Technology. 79(2), 70-74 (2012). https://doi.org/10.1364/JOT.79.000070

Abstract:

This paper presents the elements of the theory and the results of an analysis of the spatial distribution of the field characteristics in the neighborhood of the focus for an input pulse in the form of a harmonic vibration with a Gaussian envelope. The signal parameters are varied from an ultrashort to a quasi-monochromatic pulse. The evolution in time of the input pulse and the edge wave is demonstrated. It is shown that the field structure in the focal plane approaches that for a monochromatic wave when the effective number of vibrations is greater than 3–5.

Keywords:

delta function, impulse response, ultrashort pulse, field structure in focus

OCIS codes: 320.0320, 050.1960, 110.1650, 110.6915, 110.7170

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