Dynamics of dipole breathers in nonlinear media with a spatial exponential-decay nonlocality

作者：Yang, Zhen Jun^*; Dai, Zhi Ping; Zhang, Shu Min; Pang, Zhao Guang

来源：Nonlinear Dynamics, 2015, 80(3): 1081-1090.

DOI：10.1007/s11071-015-1928-1

• Nonlocal nonlinearity
• Variational approach
• Dipole breather
• Propagation dynamics

By applying the variational approach, the analytical expression of dipole breathers is obtained in nonlinear media with an exponential-decay nonlocal response. The parameters of the width, the amplitude, the phase-front curvature, and the phase of the complex amplitude of the dipole breathers are all given in analytical expressions. It is found that the input power plays a key role in the evolution of dipole breathers, whose magnitude decides the change of the beam width (compressed or broadened) during propagation. The physical reason for the evolution of dipole breathers is analyzed in detail. Numerical simulations are also carried out, and the analytical solutions are in good agreement with numerical simulations.

• 出版日期2015-5
• 单位河北师范大学; 衡阳师范学院