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Proceedings Paper

Design of efficient Gauss to top-hat converters using geometrical phase elements inscribed in the glass by femtosecond laser pulses
Author(s): P. Gotovski; P. Šlevas; E. Nacius; V. Jukna; S. Orlov; O. Ulcinas; J. Baltrukonis; T. Gertus
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Paper Abstract

Beam profile engineering, where a desired optical intensity distribution is generated by phase shifting and/or amplitude changing elements, is a promising approach in various laser-related applications. For example, vector geometrical phase elements enable various flat special optical elements such as top-hat converters. We present a study on engineering efficient top-hat converters inscribed in the glass by femtosecond laser pulses. We start with an amplitude encoded top hat converter and demonstrate how its efficiency can be further increased by introduction of phase masks and by the polarization of the incident beam. Experimental verification of the concept is also presented.

Paper Details

Date Published: 2 March 2020
PDF: 10 pages
Proc. SPIE 11266, Laser Resonators, Microresonators, and Beam Control XXII, 112661J (2 March 2020); doi: 10.1117/12.2546620
Show Author Affiliations
P. Gotovski, State Research Ctr. for Physical Sciences and Technology (Lithuania)
P. Šlevas, State Research Ctr. for Physical Sciences and Technology (Lithuania)
Workshop of Photonics (Lithuania)
E. Nacius, State Research Ctr. for Physical Sciences and Technology (Lithuania)
Workshop of Photonics (Lithuania)
V. Jukna, State Research Ctr. for Physical Sciences and Technology (Lithuania)
Vilnius Univ. (Lithuania)
S. Orlov, State Research Ctr. for Physical Sciences and Technology (Lithuania)
O. Ulcinas, State Research Ctr. for Physical Sciences and Technology (Lithuania)
Workshop of Photonics (Lithuania)
J. Baltrukonis, State Research Ctr. for Physical Sciences and Technology (Lithuania)
Workshop of Photonics (Lithuania)
T. Gertus, Light Conversion (Lithuania)


Published in SPIE Proceedings Vol. 11266:
Laser Resonators, Microresonators, and Beam Control XXII
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko; Andrea M. Armani, Editor(s)

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