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Proceedings Paper

Direct laser writing and applications of dielectric microstructures with low refractive index contrast
Author(s): Vygantas Mizeikis; Vytautas Purlys; Lina Maigyte; Kestutis Staliunas; Saulius Juodkazis
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Paper Abstract

High versatility of direct laser write (DLW) technique makes it ideally suited for fabrication of 3D micro- and nano-structures with complex lattice topologies. However, DLW typically exploits irreversible photomodification of materials, for example optical breakdown or photopolymerization. Here we describe application of DLW technique for structuring of iron-doped lithium niobate (LiNbO3:Fe) crystals. This approach exploits reversible photomodification resulting in low refractive index modulation (~10-3) via photorefractive effect. We demonstrate formation of meta-stable, optically reconfigurable structures that can be erased or re-written without permanent optical damage to the host crystal. All-optical recording-erasure cycle may allow realization of dynamically modifiable photonic microstructures, such as waveguides, diffractive elements and optical memories.

Paper Details

Date Published: 11 February 2011
PDF: 9 pages
Proc. SPIE 7927, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics IV, 79270F (11 February 2011); doi: 10.1117/12.875951
Show Author Affiliations
Vygantas Mizeikis, Shizuoka Univ. (Japan)
Vytautas Purlys, Vilnius Univ. (Lithuania)
Lina Maigyte, Univ. Politècnica de Catalunya (Spain)
Kestutis Staliunas, Univ. Politècnica de Catalunya (Spain)
Saulius Juodkazis, Swinburne Univ. of Technology (Australia)

Published in SPIE Proceedings Vol. 7927:
Advanced Fabrication Technologies for Micro/Nano Optics and Photonics IV
Winston V. Schoenfeld; Jian Jim Wang; Marko Loncar; Thomas J. Suleski, Editor(s)

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