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Femtosecond laser-induced two-photon photopolymerization for structuring of micro-optical and photonic devices
Proc. SPIE 7366, 736622 (2009); http://dx.doi.org/10.1117/12.821776
Monday 4 May 2009
Dresden, Germany
Photonic Materials, Devices, and Applications III
Ali Serpenguzel
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Add to FacebookLight initiated liquid polymer quasi-instant solidification is attractive for its ultra precise spatial and temporal control of the reaction. Here we present femtosecond laser induced two-photon photopolymerization for structuring of microoptical and sample photonic devices. Due to nonlinear phenomena the fabrication resolution is not restricted to diffraction limit for the applied laser excitation wavelength but determined by the exposure dose. Furthermore, pinpoint structuring enables one to produce 3D structures of any form out of photopolymer. The smallest structural elements voxels of 200 nm lateral dimensions can be achieved reproducibly by using high numerical aperture optics. Axial resolution which is fundamentally few times worse than lateral can be controlled in few hundred nanometers precision by forming polymeric pad as an additional structure. In our work we applied commercially available and widely used hybrid zirconium-silicon based hybrid sol-gel material ORMOSIL (SZ2080) and an acrylate based AKRE37 photopolymer. Arrays of custom parameters spherical microlenses for microscopy applications have been fabricated. Their surface roughness, focal distance and imaging quality were tested. 3D custom form woodpile structures with submicron period and chain-mail structure were made as a sample photonic bandgap structures. Finally, we show some structures produced out of fluorescent dyes rhodamine 6G doped photopolymer.
© 2009 COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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Online May 20, 2009
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Mangirdas Malinauskas, Holger Gilbergs, Vytautas Purlys, Albertas Žukauskas, Marius Rutkauskas and Roaldas Gadonas, "Femtosecond laser-induced two-photon photopolymerization for structuring of micro-optical and photonic devices",
Proc. SPIE 7366, 736622 (2009); http://dx.doi.org/10.1117/12.821776
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