Acta Physica Sinica, Volume. 69, Issue 12, 127802-1(2020)
Fig. 3. Low temperature PL spectra of low nitrogen diamond: (a) Before irradiation; (b) after irradiation; (c) 900 ℃ annealing.
Fig. 4. Low temperature PL spectra of low nitrogen diamond at different laser powers after irradiation and annealing (The maximum laser power is 50 mW (100%)).
Fig. 5. PL spectra of low nitrogen diamond at 80–200 K after irradiation and annealing.
Fig. 6. Variation curves of zero phonon lines with measurement temperature: (a) Position; (b) intensity; (c) full width at half maximum.
Fig. 7. Voigt curve fitting of PL spectra at different temperatures: (a) 1.945 eV; (b) 2.155 eV.
Fig. 8. Temperature dependence of Gaussian width and Lorentzian width derived from the deconvolution routine for the NV center: (a) NV—; (b) NV0.
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Kai-Yue Wang, Rui-Ang Guo, Hong-Xing Wang.
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Received: Mar. 16, 2020
Accepted: --
Published Online: Dec. 8, 2020
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