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Phys Rev Lett. 2010 Dec 3;105(23):233903. Epub 2010 Dec 1.

Evidence of light guiding in ion-implanted diamond.

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  • 1Department of Energetics University of Firenze and INFN, Via S Marta 3, Italy.


We demonstrate the feasibility of fabricating light-waveguiding microstructures in bulk single-crystal diamond by means of direct ion implantation with a scanning microbeam, resulting in the modulation of the refractive index of the ion-beam damaged crystal. Direct evidence of waveguiding through such buried microchannels is obtained with a phase-shift micro-interferometric method allowing the study of the multimodal structure of the propagating electromagnetic field. The possibility of defining optical and photonic structures by direct ion writing opens a range of new possibilities in the design of quantum-optical devices in bulk single-crystal diamond.

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