Temporary "compression" of femtosecond pulses in the focus of truncated microellipsoid
E.S. Kozlova, V.V. Kotlyar

Image Processing Systems Institute, Russian Academy of Sciences,
Samara State Aerospace University

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Full text of article: Russian language.

DOI: 10.18287/0134-2452-2014-38-3-380-385

Pages: 380-385.

Abstract:
Truncated ellipsoid which all parallel incident rays collects on it’s flat surface is designed. Simulation by (FD)2TD method of focusing of femtosecond pulse (duration 1.24 fs and the carrier wavelength λ = 532 nm) by a silica truncated microellipsoid with smaller cross-sectional diameter of 1.16 mm showed that the ellipsoid gives an elliptical focus spot with a smaller diameter FWHM = 0,38 λ. At the same time the pulse duration at the focus of a few percent smaller than the duration of the incoming pulse.

Key words:
FDTD-method, microoptic, femtosecond pulse, sharp focusing of light, microsphere, mikroellipsoid, mikroparaboloid, microlens, the Selmeyer’s dispersion model.

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