Caetano D P, Cavalcanti Solange B, Hickmann J Miguel
Departamento de Física, Universidade Federal de Alagoas, 57072-970 Maceió AL, Brazil.
Phys Rev E Stat Nonlin Soft Matter Phys. 2002 Mar;65(3 Pt 2B):036617. doi: 10.1103/PhysRevE.65.036617. Epub 2002 Mar 5.
Using a numerical approach we report on the cloning dynamics of simultaneous self-induced transparency (SIT) and nonlinear Schrödinger (NLS) solitons in a doped nonlinear dispersive medium. This technique involves a three-level atomic system interacting resonantly with two optical fields within a Lambda scheme. As a result, a pulse in the signal frequency is transformed into a replica of the pulse in the pump frequency. The atomic population evolution shows that the basic mechanism behind the cloning process is the coherent population trapping effect. Furthermore, it is shown that the signal clone presents characteristics of both the SIT soliton and NLS soliton.
我们采用数值方法报告了掺杂非线性色散介质中同时存在的自感应透明（SIT）孤子和非线性薛定谔（NLS）孤子的克隆动力学。该技术涉及一个三能级原子系统，在Λ型结构中与两个光场发生共振相互作用。结果，信号频率的脉冲被转换为泵浦频率脉冲的副本。原子布居数演化表明，克隆过程背后的基本机制是相干布居数俘获效应。此外，结果表明信号克隆体同时呈现SIT孤子和NLS孤子的特征。
