Dumeige Yannick, Roch Jean-François, Bretenaker Fabien, Debuisschert Thierry, Acosta Victor, Becher Christoph, Chatzidrosos Georgios, Wickenbrock Arne, Bougas Lykourgos, Wilzewski Alexander, Budker Dmitry
Opt Express. 2019 Jan 21;27(2):1706-1717. doi: 10.1364/OE.27.001706.
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 photonshot-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.
我们提出了一种混合激光系统，该系统由一个半导体外腔激光器与一个腔内掺有氮空位色心的金刚石标准具组成。我们考虑将激光发射调谐到在依赖于磁场的氮空位电子自旋共振下增强的红外吸收线，并表明这种架构会产生一种可在室温下运行的紧凑型固态磁力计。由输出激光束的光子散粒噪声限制的对磁场的灵敏度估计小于1皮特斯拉/赫兹。与通常的氮空位中心红外磁力测量不同，这种方法不需要外部频率稳定激光器。由于所提出的系统依赖于激光阈值与腔内吸收之间的竞争，这种基于激光的光学传感器可以很容易地适用于基于吸收光谱的各种传感应用。
