Physics Department and Solid State Institute, Technion, Haifa 32000, Israel.
Phys Rev Lett. 2011 May 27;106(21):213903. doi: 10.1103/PhysRevLett.106.213903. Epub 2011 May 26.
We present self-accelerating self-trapped beams in nonlinear optical media, exhibiting self-focusing and self-defocusing Kerr and saturable nonlinearities, as well as a quadratic response. In Kerr and saturable media such beams are stable under self-defocusing and weak self-focusing, whereas for strong self-focusing the beams off-shoot solitons while their main lobe continues to accelerate. Self-accelerating self-trapped wave packets are universal, and can also be found in matter waves, plasma, etc.
我们提出了非线性光学介质中的自加速自陷光束，其表现出自聚焦和自散焦克尔和可饱和非线性，以及二次响应。在克尔和可饱和介质中，这种光束在自散焦和弱自聚焦下是稳定的，而对于强自聚焦，光束会产生分岔孤子，而其主瓣继续加速。自加速自陷波包是普遍存在的，也可以在物质波、等离子体等中找到。
