光学学报, 2018, 38 (10): 1019001, 网络出版: 2019-05-09   

脉冲内四波混频与四分量超慢光孤子 下载: 815次

Intrapulse Four-Wave Mixing and Four-Component Ultraslow Optical Solitons
王苗 **杭超 *
作者单位
华东师范大学精密光谱科学与技术国家重点实验室, 上海 200062
摘要
研究了电磁感应透明条件下五能级M型原子体系中探测光脉冲的非线性传播。当探测光脉冲的脉宽较大时,其色散效应可忽略,脉冲内具有不同偏振方向和不同边带的4个分量可发生四波混频,相互交换能量;当探测光脉冲的脉宽较短时,必须考虑其色散效应,4个分量可形成一种全新的四分量超慢光孤子。产生这种四分量超慢光孤子的输入功率为微瓦量级,远低于光纤中产生矢量光孤子所需的能量。
Abstract
The nonlinear propagation of a probe pulse in a M-type five-level atomic system is investigated under the condition of electromagnetically induced transparency. As for a long probe pulse, its dispersion effect can be neglected, and the four-wave mixing process and the energy exchange can occur among the four components within the probe pulse with different polarization directions and different side-bands. In contrast, as for a short probe pulse, the dispersion effect must be considered, and a novel kind of four-component ultraslow optical soliton occurs among these four components. In addition, the input power for the generation of such soliton is at micro-watt level, which is much lower than that needed for the generation of the vector solitons in fibers.

王苗, 杭超. 脉冲内四波混频与四分量超慢光孤子[J]. 光学学报, 2018, 38(10): 1019001. Miao Wang, Chao Hang. Intrapulse Four-Wave Mixing and Four-Component Ultraslow Optical Solitons[J]. Acta Optica Sinica, 2018, 38(10): 1019001.

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