Spatial domain interactions between ultraweak optical beams.
Spatial domain interactions between ultraweak optical beams.
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DOI：
10.1103/physrevlett.111.223601
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发表时间：
2013-01
影响因子：
8.6
通讯作者：
Utsab Khadka;Jiteng Sheng;M. Xiao
中科院分区：
文献类型：
--
作者：
Utsab Khadka;Jiteng Sheng;M. Xiao
我们观察到两个最初共线且不重叠的超弱光束之间的空间相互作用。弱光束通过空间变化的交叉克尔折射率波导转向彼此，该波导由强激光束写入三级相干制备的原子介质中。融合在一起后，组合光束表现出可控的相位相关行为。这是首次观察到弱光束之间的类孤子相互作用，可用于弱光子信号的全光学可调谐光束组合、切换和选通。
We have observed spatial interactions between two ultraweak optical beams that are initially collinear and nonoverlapping. The weak beams are steered towards each other by a spatially varying cross-Kerr refractive index waveguide written by a strong laser beam in a three-level coherently prepared atomic medium. After fusing together, the combined beam shows controllable phase-dependent behaviors. This is the first observation of solitonlike interactions between weak beams and can be useful for all-optically tunable beam combining, switching, and gating for weak photonic signals.