Stimulated emission cross sections and temperature‐dependent spectral shifts of neutral nitrogen‐vacancy centers in diamonds
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2022-12-19 |
| Journal | Journal of the Chinese Chemical Society |
| Authors | Teng‐I Yang, Terumitsu Azuma, Yu‐Wen Huang, Yuen Yung Hui, Cheng‐Tien Chiang |
| Institutions | National Taiwan University, National Taiwan Normal University |
| Citations | 7 |
Abstract
Section titled “Abstract”Abstract The neutral nitrogen‐vacancy (NV 0 ) defects in diamond are photostable color centers, suitable for a wide range of applications in science and engineering. However, the photophysical properties of the centers have not yet been fully characterized. This work measured the stimulated emission cross sections of NV 0 in a single‐crystal diamond by two‐photon excitation of its matrix at 344 nm. From the measured photoluminescence spectrum and the fluorescence lifetime of 20 ± 1 ns, we determined a peak stimulated emission cross section of 1.43 ± 0.07 × 10 −17 cm 2 at 650 nm for the NV 0 centers. In addition, we have also examined the thermal shifts of the zero‐phonon line of NV 0 centers in nanoscale diamonds (~100 nm in diameter) over the temperature range of 30-120°C. A temperature measurement sensitivity of 0.2 K·Hz −1/2 was achieved, which is about two‐fold better than that of NV − , despite that the fluorescence intensity of NV 0 is about six‐fold lower than that of NV − in the same nanoparticles. The result is attributed to the smaller electron-phonon coupling strength of the neutral center, compared with its negatively charged counterpart.
Tech Support
Section titled “Tech Support”Original Source
Section titled “Original Source”References
Section titled “References”- 2020 - 21st Century Nanoscience—A Handbook: Exotic Nanostructures and Quantum Systems