期刊
NANOPHOTONICS
卷 9, 期 15, 页码 4505-4518出版社
WALTER DE GRUYTER GMBH
DOI: 10.1515/nanoph-2020-0305
关键词
diamond colour centres; fibre cavity; laser threshold magnetometry; nitrogen-vacancy centres; NV charge state switching; NV-stimulated emission
资金
- International Macquarie University Research Excellence Scholarship (iMQRES) [2014108]
- EQUS centre collaboration award
- Australian Research Council [DE170101371, FT160100357]
- Australian Research Council Centre of Excellence for Engineered Quantum Systems [CE170100009]
- German Federal Ministry for Education and Research Bundesministerium fur Bildung und Forschung (BMBF) [13XP5063]
- JSPS KAKENHI [JP18H01470]
- Asahi Glass Foundation
- Australian Research Council [DE170101371] Funding Source: Australian Research Council
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.
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