Excited-State Lifetime of NV Centers for All-Optical Magnetic Field Sensing
- We investigate the magnetic field-dependent fluorescence lifetime of microdiamond powder containing a high density of nitrogen-vacancy centers. This constitutes a non-intensity quantity for robust, all-optical magnetic field sensing. We propose a fiber-based setup in which the excitation intensity is modulated in a frequency range up to 100MHz. The change in magnitude and phase of the fluorescence relative to 𝐵=0 is recorded where the phase shows a maximum in magnetic contrast of 5.8∘ at 13MHz. A lock-in amplifier-based setup utilizing the change in phase at this frequency shows a 100 times higher immunity to fluctuations in the optical path compared to the intensity-based approach. A noise floor of 20μT/Hz−−−√ and a shot-noise-limited sensitivity of 0.95μT/Hz−−−√ were determined. Keywords: nitrogen-vacancy center; quantum sensor; fluorescence lifetime; all-optical; magnetometr
Download full text files
Additional Services
| Author: | Ludwig HorsthemkeORCiD, Jens PogorzelskiORCiD, Dennis StiegekötterORCiD, Frederik HoffmannORCiD, Lutz Langguth, Robert Staacke, Christian LaubeORCiD, Wolfgang Knolle, Markus GregorORCiD, Peter GlösekötterORCiD |
|---|---|
| URN: | urn:nbn:de:hbz:836-opus-182083 |
| DOI: | https://doi.org/10.25974/fhms-18208 |
| DOI of first publication: | https://doi/org/10.3390/s24072093 |
| Parent Title (English): | MDPI Sensors |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2024/10/11 |
| Year of first Publication: | 2024 |
| Publishing Institution: | FH Münster - University of Applied Sciences |
| Release Date: | 2024/10/11 |
| Tag: | Magnetic Field Sensing |
| Volume: | 2024 |
| Issue: | 24(7) |
| Institutes: | Elektrotechnik und Informatik (ETI) |
| open_access (DINI-Set): | open_access |
| Publication list: | Glösekötter, Peter |
| Licence (German): |  Creative Commons - Namensnennung (CC BY 4.0) |
