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Computer Optics, 2015, Volume 39, Issue 1, Pages 36–44 (Mi co53)  

OPTO-IT

Sharp focusing of linearly polarized asymmetric Bessel beam

V. V. Kotlyarab, S. S. Stafeevab, A. P. Porfirevab

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

Abstract: We conduct the numerical and experimental study of sharp focusing of a linearly polarized asymmetric Bessel beam with topological charge $n=3$ and a crescent-shaped transverse intensity pattern. Using the Debye integral, we show that in the focal plane of a high NA aplanatic lens ($\mathrm{NA}=0.9$$0.95$) the intensity distribution is also crescent-shaped. Using the FDTD method it is shown that a binary zone plate with $\mathrm{NA}=0.995$ also forms a crescent-shaped focal spot that is rotated around the optical axis. An asymmetric Bessel beam was generated using a spatial light modulator (SLM) and focused using an immersion objective with $\mathrm{NA}=1.25$. A crescent-shaped intensity pattern formed in the focal plane was rotated by $90$ degrees relative to the SLM-aided crescent.

Keywords: optical vortices, propagation, modes.

Funding Agency Grant Number
Ministry of Education and Science of the Russian Federation 3970.2014.9
4816.2014.2
Russian Foundation for Basic Research 13-07-97008
14-29-07133
14-07-97038
14-07-97039
15-07-01174
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-3970.2014.9) and young scientist candidate of science MK-4816.2014.2 and by RFBR grants 13-07-97008, 14-29-07133 , 14-07-97038, 14-07-97039 and 15-07-01174.


DOI: https://doi.org/10.18287/0134-2452-2015-39-1-36-44

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Received: 21.01.2015

Citation: V. V. Kotlyar, S. S. Stafeev, A. P. Porfirev, “Sharp focusing of linearly polarized asymmetric Bessel beam”, Computer Optics, 39:1 (2015), 36–44

Citation in format AMSBIB
\Bibitem{KotStaPor15}
\by V.~V.~Kotlyar, S.~S.~Stafeev, A.~P.~Porfirev
\paper Sharp focusing of linearly polarized asymmetric Bessel beam
\jour Computer Optics
\yr 2015
\vol 39
\issue 1
\pages 36--44
\mathnet{http://mi.mathnet.ru/co53}
\crossref{https://doi.org/10.18287/0134-2452-2015-39-1-36-44}


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