摘要
This paper investigates the nonlinear evolution of the pulse probe field in an asymmetric coupled-quantum well driven coherently by a pulse probe field and two controlled fields. This study shows that, by choosing appropriate physical parameters, self-modulation can precisely balance group velocity dispersion in the investigated system, leading to the formation of ultraslow optical solitons of the probe field. The proposed scheme may lead to the development of the controlled technique of optical buffers and optical delay lines.
This paper investigates the nonlinear evolution of the pulse probe field in an asymmetric coupled-quantum well driven coherently by a pulse probe field and two controlled fields. This study shows that, by choosing appropriate physical parameters, self-modulation can precisely balance group velocity dispersion in the investigated system, leading to the formation of ultraslow optical solitons of the probe field. The proposed scheme may lead to the development of the controlled technique of optical buffers and optical delay lines.
基金
Project supported by the National Fundamental Research Program of China (Grant No 2005CB724508)
Natural Science Foundation of Jiangxi, China (Grant Nos 2007GZW0819 and 2008GQW0017)
the Scientific Research Foundation of Jiangxi Provincial Department of Education (Grant No GJJ09504)
the Foundation of Talent of Jinggang of Jiangxi Province (Grant No 2008DQ00400)
