金刚石氮-空位色心零声子线的受激辐射放大

为了解决在基于金刚石氮-空位(NV)色心的磁场高灵敏度测量中，高速获取磁场信号引起的NV色心发光强度的微小变化的技术瓶颈问题，自行设计出一套能够实现金刚石NV色心自发辐射和受激辐射信号同步测量的光学系统，并利用一个长焦距透镜收集金刚石NV色心受激辐射信号，从而尽最大可能地滤除金刚石NV色心的自发辐射信号，提高测量受激放大增益的信噪比。实验中成功观察到NV色心零声子线的受激辐射放大，分析了抽运光功率、信号光功率、抽运光偏振方向和信号光偏振方向对放大特性的影响。结果表明，通过对抽运光和信号光相关参量的优化调整，最终获得了10.5%的受激辐射增益。该研究为实现NV光放大远程磁场监测奠定了研究基础。

Amplification of stimulated radiation on the zero-phonon line of nitrogen-vacancy color centers in diamond

In order to solve the technical bottleneck of the sensitive detection of the optically detected magnetic resonance(ODMR)signal from the nitrogen vacancy(NV)color centers in the diamond by taking the advantage of the directional amplification of stimulated radiation,an optical amplification system was set up to investigate the stimulated radiation of NV color centers in diamond,where the maximum amplification efficiency reached 10.5%.Besides,it is found that the amplification efficiency is related to the pump laser power and signal laser power as well as the polarization states of the two lasers.The results show that it is promising to use the amplification of stimulated radiation to replace the fluorescence in the ODMR measurement with NV color centers in the application of remote sensing.