Localized Nitrogen-Vacancy centers generated by low-repetition rate fs-laser pulses
| Autor: | Oncebay, Charlie, Almeida, Juliana M. P., Almeida, Gustavo F. B., Muniz, Sergio R., Mendonça, Cleber R. |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Diamond & Related Materials 130 (2022) 109426 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.diamond.2022.109426 |
| Popis: | Among hundreds of impurities and defects in diamond, the nitrogen-vacancy (NV) center is one of the most interesting to be used as a platform for quantum technologies and nanosensing. Traditionally, synthetic diamond is irradiated with high-energy electrons or nitrogen ions to generate these color-centers. For precise positioning of the NV centers, fs-laser irradiation has been proposed as an alternative approach to produce spatially localized NV centers in diamond. However, most of the studies reported so far used high-repetition rate fs-laser systems. Here, we studied the influence of the irradiation conditions on the generation of NV$^-$. Specifically, we varied pulse fluence, laser focusing, and the number of pulses upon irradiation with 150 fs pulses at 775 nm from a Ti:sapphire laser amplifier operating at 1 kHz repetition rate. Optically Detected Magnetic Resonance (ODMR) was used to investigate the produced NV centers, revealing a sizeable zero-field splitting in the spectra and indicating the conditions in which the lattice strain produced in the ablation process may be deleterious for quantum information applications. Comment: 15 pages, 6 figures |
| Databáze: | arXiv |
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