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Diamond Grown on Optical Fiber for Waveguiding

Photonics Spectra
May 2005
Diamond Grown on Optical Fiber for Waveguiding Scientists at the University of Melbourne in Australia report in the March 28 issue of Applied Physics Letters the waveguiding of the nitrogen-vacancy color center fluorescence in diamond microcrystals grown on optical fiber. They grew the diamond on the end faces of cleaved fiber by chemical vapor deposition and excited fluorescence in the crystals by illuminating them with 10 mW of 514-nm laser light. A spectrum they collected at the other end of the fibers indicated the successful waveguiding of the nitrogen-vacancy color center signal. The researchers note that the technique should be suitable for a range of optically active centers in diamond and suggest that such work may have implications in the use of the centers as coupling elements or room-temperature single-photon sources. They are considering commercialization of the technology. Reprinted with permission from J.R. Rabeau, S.T. Huntington, A.D. Greentree and S. Prawer, Applied Physics Letters, 86, 134104 (2005). Copyright 2005, American Institute of Physics.

optical fiber
A thin filament of drawn or extruded glass or plastic having a central core and a cladding of lower index material to promote total internal reflection (TIR). It may be used singly to transmit pulsed optical signals (communications fiber) or in bundles to transmit light or images.
diamond microcrystalsfiber opticsnitrogen-vacancy color center fluorescenceoptical fiberResearch & TechnologyTech PulseUniversity of Melbourne

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