Berlin 2024 – scientific programme

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 9: KFM Poster Session

KFM 9.32: Poster

Monday, March 18, 2024, 18:00–20:00, Poster E

NV center creation by CW laser irradiation of nitrogen implanted diamond — •Alexius Enke — Universität Leipzig, Leipzig, Deutschland

Diamond as a host of color centers has been extensively studied due to its wide range of centers connected to various defects and elements. Among these defects, the nitrogen vacancy (NV) center in diamond is one of the most researched. Its high photo stability and ability for spin manipulation with long spin coherence time make it highly suitable for applications in quantum sensing and quantum information technology.

Ion implantation methods have been successful in the cotrolled fabrication of NV centers. However, these methods require subsequent thermal annealing to heal implantation damage and induce defect diffusion, which promotes NV center generation. The drawback is that the heating process affects the entire diamond, limiting its localized application.

Femto-second laser irradiation has been proven effective in creating vacancies and initializing color center creation in diamond in a highly localized manner. In this study, the focus is on investigating the potential of continuous wave (CW) laser irradiation as a tool for local NV center creation.

We show that this technique is suitable for the creation of NV center ensembles as well as the monitored generation of single centers. Furthermore, we try to gain insights into the dynamics and correlations of this technique and deepen the understanding of the underlying physical processes involved in the creation of NV centers.

Keywords: NV center; Diamond; Laser irradiation