Abstract—
The paper reports a possibility of using high-power femtosecond laser pulses for imaging and subsequent study (by means of optical microscopy) of small-scale structural inhomogeneities in synthetic diamond single crystals. The irradiation of diamond by laser pulses in the intense self-focusing mode creates conditions for multiple optical microscopic breakdowns, whose distribution in the diamond bulk reflects spatial oscillations of local breakdown threshold. The breakdown-produced sp2 inclusions form ordered stripe microstructures with a characteristic period of several microns. It is shown that spatial oscillations of breakdown threshold correlate with changes in the local concentration of impurity–vacancy defects NV and SiV.
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This work was supported by the Russian Science Foundation (grant no. 22-22-00055).
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Ashikkalieva, K.K., Kononenko, T.V., Ashkinazi, E.E. et al. Laser Imaging of Small-Scale Structural Inhomogeneities in CVD Diamond. Phys. Wave Phen. 32, 73–82 (2024). https://doi.org/10.3103/S1541308X2470002X
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DOI: https://doi.org/10.3103/S1541308X2470002X