Beilstein J. Nanotechnol.2019,10, 2383–2395, doi:10.3762/bjnano.10.229
4H-SiC. The intensity of the largest PL from a single defect at saturation is 10 kcts/s [8] without a solidimmersionlens using an a-Si detector with 20–30% quantum efficiency and 40 kcts/s with a solidimmersionlens [4]. The DWF is 40%, the ZFS is 70 MHz for V2 and 4 MHz for V1 at the ground state
], nanopillars in 4H-SiC formed by reactive ion etching (RIE) for the improvement of the VSi emission collection efficiency [50], and the use of a solidimmersionlens (SIL) for an enhancement factor of three of single VSi [4]. Recent results of the successful enhancement of VSi in 4H-SiC based on nanopillars
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Figure 1:
(a–d) Fabrication steps to obtain the 4H-SiC micropillars. (e–h) Optical microscopy and SEM images ...
Beilstein J. Nanotechnol.2012,3, 895–908, doi:10.3762/bjnano.3.100
; diamond; nanophotonics; NV center; plasmonic resonator; solidimmersionlens; Introduction
Single quantum emitters coupled to plasmonic and dielectric microresonators hold promise for novel photonic devices, such as optical transistors [1], optical quantum memories [2][3] and controlled single-photon
suitable to overcome this effect is a so-called solidimmersionlens (SIL), i.e., a hemispherical lens fabricated out of diamond. Due to the hemispherical shape, all light rays that emanate from the center of curvature are normal to the surface of the sphere, such that no refraction occurs (Figure 5b
other hand, one can use a focused ion beam (FIB) to fabricate a micrometer-sized hemisphere around a preselected diamond color center. In the following, both approaches are discussed. We first focus on a macroscopic solidimmersionlens.
Figure 6a shows a photograph of a macroscopic hemispherical lens
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Figure 1:
(a) Scanning electron micrograph of a mica mask. High aspect ratio channels were created by bombard...