| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Kuznetsov–Ma Soliton in Coupled Quantum Wells |
| DU Ying-Jie1, XIE Xiao-Tao1, YU Jin-Ying1, BAI Jin-Tao1,2** |
1College of Physics, Northwest University, Xi'an 710068
2Institute of Photonics and photon-technology, Northwest University, Xi'an 710068 |
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DU Ying-Jie, XIE Xiao-Tao, YU Jin-Ying et al 2015 Chin. Phys. Lett. 32 074210 |
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Abstract We show the possibility to generate Kuznetsov–Ma solitons based on bound-to-bound intersubband transitions in an asymmetric two-coupled well structure. By presenting the modulation instability of the nonlinear system provided by the interaction between light fields and quantum wells, we show that the plane wave with small perturbation can evolve into periodic trains of pulses at high while controllable repetition rates. It is found that the formation of Kuznetsov–Ma solitons as well as their period is determined by the combination of group velocity dispersion, Kerr nonlinearity and the initial amplitude of the background wave. The present research may be useful for generating subpicosecond and femtosecond pulses.
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Received: 31 March 2015
Published: 30 July 2015
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