Superluminescence at nitrogen-vacancy centers in the synthetic diamond pumped by laser radiation in the range of 532−575 nm
Photoluminescence spectra of two synthetic diamond samples containing 1−10 ppm nitrogen-vacancy (NV) centers and 100−200 ppm substitutional nitrogen were studied under optical pumping at 532, 560, and 575 nm. At pump intensities less than 0.5−1.0 MW/cm2 , a vibronic photoluminescence band of NV cent...
| Published in: | Russian physics journal Vol. 65, № 11. P. 1881-1885 |
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| Other Authors: | , , , , , , , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Online Access: | http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001017179 Перейти в каталог НБ ТГУ |
| Summary: | Photoluminescence spectra of two synthetic diamond samples containing 1−10 ppm nitrogen-vacancy (NV) centers and 100−200 ppm substitutional nitrogen were studied under optical pumping at 532, 560, and 575 nm. At pump intensities less than 0.5−1.0 MW/cm2 , a vibronic photoluminescence band of NV centers in the negative charge state was observed. With an increase in the pump intensity above 0.5−1.0 MW/cm2, a superluminescence band was observed on the long-wavelength shoulder of the phonon wing in the range of 700−760 nm. The superluminescence band intensity increased with the pump intensity. It is shown that the position of the superluminescence band with maxima in the range of 715−720 nm remains unchanged at all optical pump wavelengths. |
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| Bibliography: | Библиогр.: 10 назв. |
| ISSN: | 1064-8887 |