Che Junling, Zhao Peilin, Ma Danmeng, Zhang Yanpeng
Opt Express. 2020 Jun 8;28(12):18343-18350. doi: 10.1364/OE.395426.
Considering the fact that the orbital angular momentum of light can be transferred through light-matter interactions, we experimentally induced a dressed vortex four-wave mixing (FWM) with the interaction between a vortex probe beam and an inverted Y-type four-level atomic system with a photonic band gap. Further, the Kerr-nonlinearity-modulated propagation behaviors of the probe and the dressed FWM vortices are investigated, including the spatial shift, splitting, and incompleteness of the vortex shape. Strikingly, the propagation behaviors of the vortex beams can be influenced by the interaction between the nonlinear phase and the spiral phase. This study would promote the development of optical computing and information processing science related to the interactions between optical vortices and samples.
考虑到光的轨道角动量可以通过光与物质的相互作用进行转移，我们通过实验诱导了一种缀饰涡旋四波混频（FWM），利用涡旋探测光束与具有光子带隙的倒Y型四能级原子系统之间的相互作用。此外，研究了探测光束和缀饰FWM涡旋的克尔非线性调制传播行为，包括涡旋形状的空间偏移、分裂和不完整性。引人注目的是，涡旋光束的传播行为会受到非线性相位和螺旋相位之间相互作用的影响。这项研究将推动与光学涡旋和样品之间相互作用相关的光学计算和信息处理科学的发展。
