Additive solid immersion lenses for enhanced collection efficiency of shallow NV centers by pulsed laser deposition and structurization of high-k amorphous oxides
Additive solid immersion lenses (SILs) made from yttria stabilized zirconia (YSZ) enhance light extraction efficiency for shallow nitrogen-vacancy centers in diamond by an average increase of 63% in saturation intensity. Geometric modeling showed that high refractive index materials significantly improve outcoupling, and a scalable bottom-up proof of concept for angled deposition solid immersion lenses (AD-SILs) was developed.