Superluminescence at NV-centers in synthetic diamond pumped by laser radiation in the range of 532-575 nm
The 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.
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Keywords
diamond, NV center, photoluminescence, superluminescence, laser generationAuthors
| Name | Organization | |
| Lipatov E.I. | Institute of High Current Electronics of SB RAS; National Research Tomsk State University | lipatov@loi.hcei.tsc.ru |
| Genin D.E. | Institute of High Current Electronics of SB RAS; National Research Tomsk State University | dm_genin@vtomske.ru |
| Shulepov M.A. | Institute of High Current Electronics of SB RAS; National Research Tomsk State University | mixshlp@yandex.ru |
| Tel’minov E.N. | National Research Tomsk State University | telminov@sibmail.com |
| Burachenko A.G. | Institute of High Current Electronics of SB RAS; National Research Tomsk State University | bag@loi.hcei.tsc.ru |
| Ripenko V.S. | Institute of High Current Electronics of SB RAS; National Research Tomsk State University | vstk91@mail.ru |
| Savvin A.D. | National Research Tomsk State University; N.L. Dukhov All-Russian Research Institute of Automation | savvin208@mail.ru |
| Dormidonov A.E. | N.L. Dukhov All-Russian Research Institute of Automation | dormidonov@gmail.com |
| Yelisseyev A.P. | V.S. Sobolev Institute of Geology and Mineralogy of SB RAS | eliseev.ap@mail.ru |
| Vins V.G. | VELLMAN Ltd | vgvins@gmail.com |
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