Sheng Jiteng, Wang Jing, Miri Mohammad-Ali, Christodoulides Demetrios N, Xiao Min
Opt Express. 2015 Jul 27;23(15):19777-82. doi: 10.1364/OE.23.019777.
We have experimentally observed the discrete diffraction of light in a coherently prepared multi-level atomic medium. This is achieved by launching a probe beam into an optical lattice induced from the interference of two coupling beams. The diffraction pattern can be controlled through the atomic parameters such as two-photon detuning and temperature, as well as orientations of the coupling and probe beams. Clear diffraction patterns occur only near the two-photon resonance.
我们通过实验观测到了在相干制备的多能级原子介质中光的离散衍射。这是通过将探测光束射入由两束耦合光束干涉产生的光学晶格中来实现的。衍射图样可以通过诸如双光子失谐和温度等原子参数，以及耦合光束和探测光束的取向来控制。清晰的衍射图样仅在双光子共振附近出现。
