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Computer Optics, 2018, Volume 42, Issue 3, Pages 432–446 (Mi co525)  

OPTO-IT

Comparison of focusing of short pulses in the Debye approximation

S. N. Khoninaab, A. V. Ustinovb, S. G. Volotovskyb

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

Abstract: We have examined different types of pulses and features of their frequency spectra. Calculations have shown that a significant distinction between the pulses only takes place at a very short pulse duration (shorter than the oscillation period). In this case, the Gaussian pulse becomes nonphysical and one needs to use other types of pulses, for example, the Poisson pulse. We performed comparative modeling of focusing of short pulses by an aplanatic lens for different polarization states and vortex singularity orders in the Debye approximation. We have shown that the polarization state and the presence of vortex phase singularity essentially affect the distribution in the focal area for a subcycle Poisson pulse.

Keywords: short pulses, frequency spectrum, pulses focusing, tight focusing, aplanatic lens, Debye approximation.

Funding Agency Grant Number
Russian Science Foundation 17-12-01258
This work was financially supported by the Russian Science Foundation (RSF), grant No. 17-12-01258.


DOI: https://doi.org/10.18287/2412-6179-2018-42-3-432-446

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Full text: http://www.computeroptics.smr.ru/.../420312.html
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Received: 18.04.2018
Accepted:28.05.2018

Citation: S. N. Khonina, A. V. Ustinov, S. G. Volotovsky, “Comparison of focusing of short pulses in the Debye approximation”, Computer Optics, 42:3 (2018), 432–446

Citation in format AMSBIB
\Bibitem{KhoUstVol18}
\by S.~N.~Khonina, A.~V.~Ustinov, S.~G.~Volotovsky
\paper Comparison of focusing of short pulses in the Debye approximation
\jour Computer Optics
\yr 2018
\vol 42
\issue 3
\pages 432--446
\mathnet{http://mi.mathnet.ru/co525}
\crossref{https://doi.org/10.18287/2412-6179-2018-42-3-432-446}


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