In this study, photonic crystals with a partial bandgap are demonstrated in the visible region using single-crystal diamonds. Quasi-three-dimensional photonic crystal structures are fabricated in the surface of the single-crystal diamonds using a tetrahedron Faraday cage that enables angled dry etching in three directions simultaneously. The reflection spectra can be controlled by varying the lattice constant of the photonic crystals. In addition, nitrogen-vacancy center single-photon sources are implanted on top of the diamond photonic crystals, and doubled collection efficiency from the light sources is achieved.
Bibliographical noteFunding Information:
Korea Institute of Science and Technology (2E30620); National Research Foundation of Korea (2019M3E4A107866011, 2019M3E4A1079777, 2019R1A2C2006381); Institute for Information and Communications Technology Promotion (2020-0-00947, 2020-0-00972). We thank the Korea Advanced Nano Fab Center (KANC) for the technical support in device fabrication.
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All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics