期刊
APPLIED PHYSICS LETTERS
卷 97, 期 24, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3519847
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资金
- EPSRC
- EQUIND
- NEDQIT
- Leverhulme Trust
- ERC
- Royal Society
- Engineering and Physical Sciences Research Council [EP/F008023/1, EP/F010524/1] Funding Source: researchfish
- EPSRC [EP/F010524/1, EP/F008023/1, EP/E059015/1] Funding Source: UKRI
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 mu m diameter SIL compared with NV(-)'s under a planar surface in the same crystal. Such a system is potentially scalable and easily adaptable to other defect centers in bulk diamond. (C) 2010 American Institute of Physics. [doi:10.1063/1.3519847]
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