Superluminescence in the phonon wing of the photoluminescence spectrum of NV centres in diamond optically pumped at λ = 532 nm E. I. Lipatov, D. E. Genin, M. A. Shulepov [et al.]
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ArticleContent type: Текст Media type: электронный Subject(s): сверхлюминесценция | фотолюминесценция | оптическая накачка | алмазы | лазеры | NV-центрыGenre/Form: статьи в журналах Online resources: Click here to access online
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Quantum electronics Vol. 52, № 5. P. 465-468Abstract: Superluminescence of NV centres with a band peaking at lambda = 718 nm in the phonon wing of the photoluminescence spectrum of a high-pressure high-temperature (HPHT) diamond sample under pulsed optical excitation at lambda = 532 nm with an intensity of 2 - 46 MW cm(-2) is demonstrated. Superluminescence is observed in the diamond crystal region containing 6 ppm NV centres and 150 ppm substituent nitrogen; it is absent in the crystal part with a lower nitrogen content. Superluminescence pulses are observed on the leading edge of the optical excitation pulse at lambda = 532 nm and have an FWHM value of 4 ns. The enhancement of the photoluminescence of NV centres is suggested to be due to the total internal reflection in the diamond plate (waveguide effect).
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Superluminescence of NV centres with a band peaking at lambda = 718 nm in the phonon wing of the photoluminescence spectrum of a high-pressure high-temperature (HPHT) diamond sample under pulsed optical excitation at lambda = 532 nm with an intensity of 2 - 46 MW cm(-2) is demonstrated. Superluminescence is observed in the diamond crystal region containing 6 ppm NV centres and 150 ppm substituent nitrogen; it is absent in the crystal part with a lower nitrogen content. Superluminescence pulses are observed on the leading edge of the optical excitation pulse at lambda = 532 nm and have an FWHM value of 4 ns. The enhancement of the photoluminescence of NV centres is suggested to be due to the total internal reflection in the diamond plate (waveguide effect).
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