Conţinutul numărului revistei |
Articolul precedent |
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SM ISO690:2012 PORFIREV, Alexey, KHONINA, Svetlana, MESHALKIN, Alexei, IVLIEV, Nikolay, AKIMOVA, Elena, ABASHKIN, Vladimir, PRISAKAR, Alexandr, PODLIPNOV, Vladimir. Two-step maskless fabrication of compound fork-shaped gratings in nanomultilayer structures based on chalcogenide glasses. In: Optics Letters, 2021, vol. 46, pp. 3037-3040. ISSN 0146-9592. DOI: https://doi.org/10.1364/OL.427335 |
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Optics Letters | |
Volumul 46 / 2021 / ISSN 0146-9592 /ISSNe 1539-4794 | |
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DOI:https://doi.org/10.1364/OL.427335 | |
Pag. 3037-3040 | |
Rezumat | |
We demonstrate an easy two-step maskless method for the fabrication of so-called compound fork-shaped gratings in nanomultilayer structures (NMLSs) based on chalcogenide glasses. Such elements allowone to generate different configurations of optical vortex (OV) beams with given topological charges (TCs). The used NMLS is particularly interesting because it enables one to realize the direct onestep writing of the surface relief without selective etching. We show that it is possible to control TCs of the generated OV beam arrays, their locations, and intensity. The proposed approach can easily be adapted to the fabrication of compound diffractive gratings performing the desired one- and two-dimensional generation and splitting of other structured laser beams. |
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Cuvinte-cheie Chalcogenide glass, Diffractive grating, Maskless fabrication, Optical vortices, Selective etching, Shaped gratings, Structured laser, Topological charges |
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