Shen Yutong, Huang Yongping, Yuan Jiaqi, He Ruidong, Ning Shaohuan, He Zhiling, Du Lijun, Zhang Yanpeng, Zhang Zhaoyang
Opt Lett. 2024 Oct 15;49(20):5803-5806. doi: 10.1364/OL.539689.
We propose a method to prepare optically induced rotating hexagonal and honey-comb photonic lattices by employing the phase modulated three-beam interference in atomic vapors with electromagnetically induced transparency. The phase differences among the three beams are dynamically elaborated to synthesize the circular motion (in transverse dimensions) of waveguides in the photonic lattices. Further, we verify this model experimentally in the case of low-speed modulation. A weak Gaussian probe field is sent into the constructed helical photonic lattices to image their structures under electromagnetically induced transparency (EIT). The motion trajectories of the sites on the discretized output patterns exhibit repeated circles, advocating the formation of rotating lattices. By introducing phase modulations to involved beams, we provide a continent way for producing transverse motions in waveguide arrays with reconfigurability in rotational direction, radius, and speed. This work looks forward to promising applications in topological photonics with great popularity.
我们提出了一种方法，通过在具有电磁诱导透明性的原子蒸气中利用相位调制三光束干涉来制备光学诱导旋转的六边形和蜂窝状光子晶格。动态调整三束光之间的相位差，以合成光子晶格中波导的圆周运动（在横向维度上）。此外，我们在低速调制的情况下通过实验验证了该模型。将一个弱高斯探测场送入构建的螺旋光子晶格中，以在电磁诱导透明（EIT）条件下对其结构进行成像。离散输出图案上各点的运动轨迹呈现出重复的圆形，表明旋转晶格的形成。通过对相关光束引入相位调制，我们提供了一种连续的方法来在波导阵列中产生横向运动，且在旋转方向、半径和速度方面具有可重构性。这项工作有望在备受关注的拓扑光子学中得到广泛应用。
