Strongly enhanced photon collection from diamond defect centers under microfabricated integrated solid immersion lenses
Strongly enhanced photon collection from diamond defect centers under microfabricated integrated solid immersion lenses
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DOI：
10.1063/1.3519847
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发表时间：
2010-12-13
影响因子：
4
通讯作者：
Rarity, J. G.
中科院分区：
文献类型：
--
作者：
Hadden, J. P.;Harrison, J. P.;Rarity, J. G.
在金刚石-空气界面处的折射会大大降低从金刚石中光学活性缺陷中心收集光子的效率。我们报告的制造和测量的几何解决方案的问题，集成的固体浸没透镜（锡尔斯）直接蚀刻到金刚石表面。与同一晶体中平坦表面下的NV（-）相比，在5 μ m直径SIL内的单个带负电荷的氮空位（NV（-））的饱和计数率增加了10倍。这样的系统是潜在的可扩展的，并且容易地适用于块状金刚石中的其他缺陷中心。(C)2010年美国物理学会。[doi 10.1063/1.3519847]
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]