Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.02 vteřin. 
Dielectric metasurfaces as modern optical components
Rovenská, Katarína ; Kolařík, Vladimír (oponent) ; Ligmajer, Filip (vedoucí práce)
Thanks to their high versatility and low spatial demands, metasurfaces are promising as replacements of traditional optical components. Within this thesis, attention is brought mostly to the metasurfaces which can replace half wave plates and diffractive beam splitters. Two strategies for fabrication of high-aspect ratio nanostructures from titanium dioxide are demonstrated -- one employing reactive ion etching of TiO2 layer through a metallic hardmask, the other using a patterned electron resist as a mold for atomic layer deposition of TiO2. The optical properties of the fabricated structures, such as phase shift and transmissivity, are also characterized and analyzed.
Dielectric metasurfaces as modern optical components
Rovenská, Katarína ; Kolařík, Vladimír (oponent) ; Ligmajer, Filip (vedoucí práce)
Thanks to their high versatility and low spatial demands, metasurfaces are promising as replacements of traditional optical components. Within this thesis, attention is brought mostly to the metasurfaces which can replace half wave plates and diffractive beam splitters. Two strategies for fabrication of high-aspect ratio nanostructures from titanium dioxide are demonstrated -- one employing reactive ion etching of TiO2 layer through a metallic hardmask, the other using a patterned electron resist as a mold for atomic layer deposition of TiO2. The optical properties of the fabricated structures, such as phase shift and transmissivity, are also characterized and analyzed.

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