Zhu Qiang, Wang Zhiping, Li Yan, Li Yinhai, Huang Zhixiang, Zhou Zhiyuan, Yu Benli
Opt Lett. 2024 Aug 1;49(15):4166-4169. doi: 10.1364/OL.528321.
The polarization and orbital angular momentum (OAM) degrees of freedom carried by light have important applications in precision optical measurement and optical sensing. Here we show that the electro-optic Pockels effect of a magnesium-doped lithium niobate (MgO:LiNbO) crystal can be used to measure a low-frequency electric field. By exploiting the rotation property of superposition OAM light, we experimentally observe that the minimum measured precision of electric field intensity is about 0.18 V/m. This study offers a method to perform low-frequency electric field sensing.
光所携带的偏振和轨道角动量（OAM）自由度在精密光学测量和光学传感中具有重要应用。在此我们表明，掺镁铌酸锂（MgO:LiNbO）晶体的电光泡克耳斯效应可用于测量低频电场。通过利用叠加OAM光的旋转特性，我们通过实验观察到电场强度的最小测量精度约为0.18 V/m。本研究提供了一种进行低频电场传感的方法。
