Towards Room-Temperature Laser Magnetometry with NV Centres in Open Fibre Cavities
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2019-06-01 |
| Authors | Sarath Raman Nair, Lachlan J. Rogers, Jan Jeske, Xavier Vidal, Andrew Wood |
| Institutions | ARC Centre for Nanoscale BioPhotonics, UniversitƤt Ulm |
Abstract
Section titled āAbstractāSummary form only given. Magnetic sensing with lasing from negatively charged nitorgen-vacancy (NV) centres in diamond is predicted to reach fT/āHz regime even at room temperature [1]. Stimulated emission from NV centres has already been explored as a stepping stone towards such a laser magnetometer [2, 3, 4]. Here we report the observation of amplification on the cavity transmission of an open fibre cavity formed between a fibre-mirror and a macroscopic mirror, loaded with a high NV density diamond sample. On adding green laser light to optically pump the NV centres, we observe amplification on the transmitted seed wavelength close to 720 nm up to a factor around 3.