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Computer Optics, 2016, Volume 40, Issue 1, Pages 36–44 (Mi co113)  

OPTO-IT

Method of measurement of thickness of uniaxial anisotropic crystals and thermal control of Bessel beam transformation

V. D. Paranina, S. V. Karpeevba

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

Abstract: We propose a method of polarization-based measurement of thickness and birefringence of uniaxial crystal X-cuts, which consists in measuring the spectral transmittance of a "polarizer-crystal-analyzer" structure. With use of X-cuts of a congruent lithium niobate with a nominal thickness of 1.052 mm, the validity of the method is experimentally confirmed and recommendations on its practical use are made. A possibility to control the Bessel beam conversion in CaCO$_3$ crystal via changing its thickness is shown. The controlled conversion of a zero-order Bessel beam into a second-order vortex Bessel beam due to effect of the thermal linear expansion of a crystal by heating is experimentally investigated.

Keywords: birefringence, uniaxial crystal, transmission spectrum, measurement of thickness, vortex Bessel beams, control of beam conversion, thermal expansion.

Funding Agency Grant Number
Ministry of Education and Science of the Russian Federation
Russian Foundation for Basic Research 16-07-00825_
14-02-97033__
This work was financially supported by the RF Ministry of Education and Science and by the Russian Foundation for Basic Research (grants 16-07-00825, 14-02-97033r_pjvolzhje_).


DOI: https://doi.org/10.18287/2412-6179-2016-40-1-36-44

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Full text: http://www.computeroptics.smr.ru/.../400106.html
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Received: 24.12.2015
Revised: 09.02.2016

Citation: V. D. Paranin, S. V. Karpeev, “Method of measurement of thickness of uniaxial anisotropic crystals and thermal control of Bessel beam transformation”, Computer Optics, 40:1 (2016), 36–44

Citation in format AMSBIB
\Bibitem{ParKar16}
\by V.~D.~Paranin, S.~V.~Karpeev
\paper Method of measurement of thickness of uniaxial anisotropic crystals and thermal control of Bessel beam transformation
\jour Computer Optics
\yr 2016
\vol 40
\issue 1
\pages 36--44
\mathnet{http://mi.mathnet.ru/co113}
\crossref{https://doi.org/10.18287/2412-6179-2016-40-1-36-44}


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