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Ultrafast laser processing: New options for three-dimensional photonic structures

: Nolte, S.; Will, M.; Burghoff, J.; Tünnermann, A.


Journal of modern optics 51 (2004), No.16-18, pp.2533-2542
ISSN: 0950-0340
ISSN: 1362-3044
Winter Colloquium on the Physics of Quantum Electronics <34, 2004, Snowbird/Utah>
Journal Article, Conference Paper
Fraunhofer IOF ()
integrated optic; refractive index change; photonic device; ultrafast processing; waveguide

During the past years ultrashort pulse lasers have gained a lot of interest for the direct writing of photonic structures in transparent media. This technique allows to produce true three-dimensional optical structures and is applicable to many different glasses as well as to crystalline media. Although the mechanism responsible for the refractive index changes is still under discussion, various photonic structures, ranging from low loss optical waveguides to couplers, three-dimensional splitters and also active waveguides, have been realized. In this presentation, an overview of the recent advances in the ultrafast direct writing of photonic devices in different glasses as well as crystalline media will be given.