- Title
- Amplification by stimulated emission of nitrogen-vacancy centres in a diamond-loaded fibre cavity
- Creator
- Raman Nair, Sarath; Rogers, Lachlan J.; Vidal, Xavier; Roberts, Reece P.; Abe, Hiroshi; Ohshima, Takeshi; Yatsui, Takashi; Greentree, Andrew D.; Jeske, Jan; Volz, Thomas
- Relation
- Nanophotonics Vol. 9, Issue 15, p. 4505-4518
- Publisher Link
- http://dx.doi.org/10.1515/nanoph-2020-0305
- Publisher
- Walter de Gruyter GmbH
- Resource Type
- journal article
- Date
- 2020
- Description
- Laser threshold magnetometry using the negatively charged nitrogen-vacancy (NV−) centre in diamond as a gain medium has been proposed as a technique to dramatically enhance the sensitivity of room-temperature magnetometry. We experimentally explore a diamond-loaded open tunable fibre-cavity system as a potential contender for the realisation of lasing with NV− centres. We observe amplification of the transmission of a cavity-resonant seed laser at 721 nm when the cavity is pumped at 532 nm and attribute this to stimulated emission. Changes in the intensity of spontaneously emitted photons accompany the amplification, and a qualitative model including stimulated emission and ionisation dynamics of the NV− centre captures the dynamics in the experiment very well. These results highlight important considerations in the realisation of an NV− laser in diamond.
- Subject
- diamond colour centres; fibre cavity; laser threshold magnetometry; nitrogen-vacancy centres; NV charge state switching; NV-stimulated emission
- Identifier
- http://hdl.handle.net/1959.13/1427500
- Identifier
- uon:38538
- Identifier
- ISSN:2192-8606
- Rights
- Open Access. © 2020 Sarath Raman Nair et al., published by De Gruyter. This work is licensed under the Creative Commons Attribution 4.0 International License,(https://creativecommons.org/licenses/by/4.0).
- Language
- eng
- Full Text
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