International Conference "Ultrafast Optical Phenomena" (UltrafastLight-2022), October 03-07, 2022, Moscow
Spectroscopy of condensed state

Temperature characteristics of “silicon-vacancy” luminescent centers in diamond particles synthesized by various methods

A. M. Romshin^a, D. G. Pasternak^a, A. Altakhov^a, R. Kh. Bagramov^b, V. P. Filonenko^b, I. I. Vlasov<sup>a

a</sup> Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
^b Institute for High Pressure Physics, Russian Academy of Sciences, 142190 Moscow, Russia

Abstract: Recently, we have developed a new approach to measuring local temperatures and controlled heating using diamond particles containing luminescent “silicon-vacancy” centers (SiV). Here, in the development of this approach, the two dependencies are investigated by confocal laser spectroscopy. First, spectral characteristics of SiV-centers in diamond microparticles of various synthesis on the ambient temperature are studied. Second, the heating temperatures of diamond particles on the optical power are analyzed. The maximum temperature sensitivity of SiV-luminescence is determined for diamonds obtained at high pressures, while the maximum heating efficiency is observed for diamonds synthesized by chemical vapor deposition.

Keywords: diamond microparticles, color centers, microthermometry.

Received: 25.11.2022
Revised: 09.01.2023
Accepted: 28.01.2023

DOI: 10.21883/OS.2023.02.54995.18-23

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