Robust integration of nitrogen-vacancy centers in nanodiamonds to optical fiber and its application in all-optical thermometry
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2021-01-01 |
| Journal | Chinese Optics Letters |
| Authors | Ce Bian, Minxuan Li, Wei Cao, Manli Hu, Zhiqin Chu |
| Institutions | University of Hong Kong, Northwest University |
| Citations | 8 |
Abstract
Section titled āAbstractāIn this Letter, we developed a robust method for integrating nanodiamonds (NDs) to optical fiber. The NDs, containing nitrogen-vacancy (NV) centers, were uniformly mixed with UV adhesive before coating the end surface of a multimode fiber as a hemispherical film. The excitation and collection efficiency of NV fluorescence can be enhanced by increasing the thickness of UV adhesive film and additional aluminum film deposition. The fiber-based quantum sensor was also experimentally demonstrated for all-optical thermometry application. The variation of the refractive index of UV adhesive under different temperatures will also affect the NV collection efficiency by changing the light confinement. The demonstrated facile integration approach paves the way for developing fiber-based quantum thermometry and magnetometry.