Inscription in the glass of efficient Gauss to top-hat converters based on Pancharatnam-Berry phase by high power femtosecond laser pulses

Pavel Gotovski; Paulius Šlevas; Sergej Orlov; Orestas Ulčinas; Antanas Urbas

doi:10.1117/12.2578318

5 March 2021 Inscription in the glass of efficient Gauss to top-hat converters based on Pancharatnam-Berry phase by high power femtosecond laser pulses

Pavel Gotovski, Paulius Šlevas, Sergej Orlov, Orestas Ulčinas, Antanas Urbas

Author Affiliations +

Proceedings Volume 11673, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVI; 116730H (2021) https://doi.org/10.1117/12.2578318
Event: SPIE LASE, 2021, Online Only

Abstract

Pancharatnam-Berry phase enables various flat special optical elements such as top-hat converters. We present a study on engineering efficient vectorial top-hat converters inscribed in the glass by high-power femtosecond laser pulses. We start with a phase-encoded top-hat converter and demonstrate how its efficiency can be further increased by adjustment of phase masks and various parameters. We use self-organized nanogratings inscribed by a femtosecond laser for the creation of the converter (produced by 'Workshop of Photonics'). Experimental verification of the concept is also presented.

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Pavel Gotovski, Paulius Šlevas, Sergej Orlov, Orestas Ulčinas, and Antanas Urbas "Inscription in the glass of efficient Gauss to top-hat converters based on Pancharatnam-Berry phase by high power femtosecond laser pulses", Proc. SPIE 11673, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVI, 116730H (5 March 2021); https://doi.org/10.1117/12.2578318

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