Characterization of Milled High-Pressure High-Temperature NV-Center Nanodiamonds for Single-Photon Source Applications.
- Resource Type
- Article
- Authors
- Kurochkin, N. S.; Savinov, S. A.; Bi, Dongxue; Sychev, V. V.; Eliseev, S. P.; Gritsienko, A. V.
- Source
- Journal of Russian Laser Research. Nov2021, Vol. 42 Issue 6, p713-720. 8p.
- Subject
- *NANODIAMONDS
*STATISTICAL correlation
*RAMAN spectroscopy
*PHOTOLUMINESCENCE
*PHOTONS
*LUMINESCENCE
- Language
- ISSN
- 1071-2836
The color centers in nanodiamonds are promising candidates for the fabrication of stable room-temperature sources of single photons. We investigate the luminescent and morphological properties of milled high-pressure high-temperature nitrogen-vacancy (NV) center nanodiamonds with sizes of ∼10 – 160 nm on a glass substrate. We carry out the studies of photoluminescence and Raman spectra of a nanodiamond powder under excitation at wavelength ⋋0 = 532 nm and demonstrate the presence of luminescence of NV− and NV0 centers, as well as fundamental diamond Raman peak (1332 cm−1). Laser scanning confocal fluorescence microscope images of NV centers under 532 nm CW excitation show the single-emitter behavior of these centers. The second-order correlation functions g(2)(t) for one or several (2–4) emitting NV centers are measured. We receive minimum g(2)(0) = 0.15 with background correction and estimate the photoluminescence lifetimes of NV centers from 10 to 25 ns. For a single NV center, we obtain the saturation count rate of ∼250 kcounts/s. [ABSTRACT FROM AUTHOR]