Femtosecond laser polymerization of hybrid/integrated micro-optical elements and their characterization

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Femtosecond laser polymerization of hybrid/integrated micro-optical elements and their characterization

Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/149973

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Title: Femtosecond laser polymerization of hybrid/integrated micro-optical elements and their characterization
Author(s): Malinauskas, Mangirdas; Zukauskas, Albertas; Purlys, Vytautas; Belazaras, Kastytis; Momot, Andrej; Paipulas, Domas; Gadonas, Roaldas; Piskarskas, Algis; Gilbergs, Holger; Gaidukeviciute, Arune; Sakellari, Ioanna; Farsari, Maria; Juodkazis, Saulius
Abstract: The femtosecond laser-induced multi-photon polymerization of a zirconium–silicon based sol–gel photopolymer was employed for the fabrication of a series of micro-optical elements with single and combined optical functions: convex and Fresnel lenses, gratings, solid immersion lenses on a glass slide and on the tip of an optical fiber. The microlenses were produced as polymer caps of varying radii from 10 to 90 µm. The matching of refractive indices between the polymer and substrate was exploited for the creation of composite glass-resist structures which functioned as single lenses. Using this principle, solid immersion lenses were fabricated and their performance demonstrated. The magnification of the composite solid immersion lenses corresponded to the calculated values. The surface roughness of the lenses was below ~ 30 nm, acceptable for optical applications in the visible range. In addition, the integration of micro-optical elements onto the tip of an optical fiber was demonstrated. To increase the efficiency of the 3D laser polymerization, the lenses were formed by scanning only the outer shell and polymerizing the interior by exposure to UV light.
Publication type: Journal article
Research centre: Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics
Source: Journal of Optics, Vol. 12, no. 12 (Dec 2010), Article no. 124010
Publication year: 2010
FOR Code(s): 0205 Optical Physics
Keyword(s): 3D nano-structuring; Bi-functional optical components; Femtosecond laser polymerization; Fiber-optics; Micro-optics; Nanofabrication; Solid immersion lenses
Publisher: Institute of Physics Publishing
ISSN: 2040-8978
Publisher URL: http://dx.doi.org/10.1088/2040-8978/12/12/124010
Peer reviewed