Hoang Minh Dong, Luong Thi Yen Nga, Dinh Xuan Khoa, Nguyen Huy Bang
Ho Chi Minh City University of Food Industry, Ho Chi Minh City, Vietnam.
Vinh University, 182 Le Duan Street, Vinh City, Vietnam.
Sci Rep. 2020 Sep 17;10(1):15298. doi: 10.1038/s41598-020-72256-4.
We proposed a simple model for generation of controllable ultraslow optical solitons of a weak probe laser light in a degenerated two-level atomic medium under electromagnetically induced transparency assisted by a magnetic field. It is shown that bright and dark optical solitons can be formed from a probe light with controllable ultraslow group velocities at a few m/s by tuning the strength of a coupling light and/or the magnetic field. In addition to the ultraslow velocity, the advantage of this model is to use a sole laser for delivering both pump and probe lights. Furthermore, one can switch between bright and dark solitons by reversing the direction of the magnetic field. Such controllable ultraslow solitons are interested in finding applications in optical communications and optical data processing.
我们提出了一个简单模型，用于在磁场辅助的电磁诱导透明条件下，在简并二能级原子介质中产生弱探测激光的可控超慢光学孤子。结果表明，通过调节耦合光的强度和/或磁场，可以从具有可控超慢群速度（几米每秒）的探测光中形成亮孤子和暗孤子。除了超慢速度外，该模型的优点是使用单一激光来传输泵浦光和探测光。此外，通过反转磁场方向，可以在亮孤子和暗孤子之间切换。这种可控超慢孤子有望在光通信和光数据处理中找到应用。
