Strongly enhanced photon collection from diamond defect centers under microfabricated integrated solid immersion lenses

@article{Hadden2010StronglyEP,
  title={Strongly enhanced photon collection from diamond defect centers under microfabricated integrated solid immersion lenses},
  author={John Patrick Hadden and Joanne Harrison and A. C. Stanley-Clarke and Luca Marseglia and Y. D. Ho and Brian R. Patton and Jeremy Lloyd O'Brien and John G. Rarity},
  journal={Applied Physics Letters},
  year={2010},
  volume={97},
  pages={241901}
}
The efficiency of photon collection from optically active defect centers in bulk diamond is greatly reduced by refraction at the diamond-air interface. We report on the fabrication and measurement of a geometrical solution to the problem; integrated solid immersion lenses (SILs) etched directly into the surface of diamond. An increase of a factor of 10 was observed in the saturated count-rate from a single negatively charged nitrogen-vacancy (NV−) within a 5 μm diameter SIL compared with NV−’s… Expand

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