Zhang Dan, Liu Xing, Yang Lingmeng, Li Xinghua, Zhang Zhaoyang, Zhang Yanpeng
Opt Lett. 2017 Aug 15;42(16):3097-3100. doi: 10.1364/OL.42.003097.
We have experimentally generated a vortex six-wave mixing (SWM) signal via a photonic band gap structure in a hot atomic ensemble. The output SWM carrying orbital angular momentum, transferred from a probe beam, has the interaction with the nonlinear effect in the multilevel atomic system. Our results show that a spatial SWM image can be modulated by the detunings and intensities of the related generating fields. Also, the nonreciprocal feature of the SWM signal is demonstrated. Such characteristics can potentially be used in information processing.
我们通过热原子系综中的光子带隙结构实验产生了一个涡旋六波混频（SWM）信号。携带从探测光束转移而来的轨道角动量的输出SWM与多能级原子系统中的非线性效应相互作用。我们的结果表明，空间SWM图像可以通过相关生成场的失谐和强度进行调制。此外，还展示了SWM信号的非互易特性。这些特性有可能用于信息处理。
