Superluminescence at NV-centers in synthetic diamond pumped by laser radiation in the range of 532-575 nm
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2022-01-01 |
| Journal | Izvestiya vysshikh uchebnykh zavedenii Fizika |
| Authors | E.I. Lipatov, D.E. Genin, Mikhail A. Shulepov, E.N. Telāminov, A.G. Burachenko |
Abstract
Section titled āAbstractāThe photoluminescence spectra of two synthetic diamond samples containing 1-10 ppm 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 700-760 nm. The intensity of superluminescence band increased with increasing pump intensity. It is shown that the position of the superluminescence band with maxima in the range 715-720 nm is unchanged at all of optical pump wavelengths.