Infrared laser threshold magnetometry with a NV doped diamond intracavity etalon

Abstract : We propose a hybrid laser system consisting of a semiconductor external cavity laser associated to an intra-cavity diamond etalon doped with nitrogen-vacancy color centers. We consider laser emission tuned to the infrared absorption line that is enhanced under the magnetic field dependent nitrogen-vacancy electron spin resonance and show that this architecture leads to a compact solid-state magnetometer that can be operated at room-temperature. The sensitivity to the magnetic field limited by the photon shot-noise of the output laser beam is estimated to be less than 1 pT/ √ Hz. Unlike usual NV center infrared magnetometry, this method would not require an external frequency stabilized laser. Since the proposed system relies on the competition between the laser threshold and an intracavity absorption, such laser-based optical sensor could be easily adapted to a broad variety of sensing applications based on absorption spectroscopy.
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Submitted on : Tuesday, April 23, 2019 - 5:45:08 PM
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Yannick Dumeige, Jean-François Roch, Fabien Bretenaker, Thierry Debuisschert, Victor Acosta, et al.. Infrared laser threshold magnetometry with a NV doped diamond intracavity etalon. Optics Express, Optical Society of America, 2019, 27 (2), pp.1706-1717. ⟨10.1364/OE.27.001706⟩. ⟨hal-02107654⟩

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