| Autor: |
Kudryashov SI, Khmelnitskii RA, Danilov PA, Smirnov NA, Levchenko AO, Kovalchuk OE, Uspenskaya MV, Oleynichuk EA, Kovalev MS |
| Jazyk: |
angličtina |
| Zdroj: |
Optics letters [Opt Lett] 2021 Mar 15; Vol. 46 (6), pp. 1438-1441. |
| DOI: |
10.1364/OL.414583 |
| Abstrakt: |
Ultrafast heating of photoionized free electrons by high-numerical-aperture (0.25-0.65) focused visible-range ultrashort laser pulses provides their resonant impact trapping into intra-gap electronic states of point defect centers in a natural IaA/B diamond with a high concentration of poorly aggregated nitrogen impurity atoms. This excites fine-structured, broadband (UV-near-infrared) polychromatic luminescence of the centers over the entire bandgap. The observed luminescence spectra revealed substitutional nitrogen interaction with non-equilibrium intrinsic carbon vacancies, produced simultaneously as Frenkel "vacancy-interstitial" pairs during the laser exposure. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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