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arXiv 1302.0403physics.opticscond-mat.quant-gasnlin.PS
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耗散光介质中的二维色散shock waves

Two-dimensional dispersive shock waves in dissipative optical media

Yaroslav V. Kartashov, Anatoly M. Kamchatnov

摘要:

研究了具有线性增益和双光子吸收的离焦材料中负折射率缺陷与倾斜平面波相互作用时二维色散激波和斜暗孤子的产生。不同的演化机制,包括形成良好的本地化的扰动输入倾斜低于临界1,和生成扩展的冲击波包含多个强度振荡的“上游”区域和逐渐消失的斜暗孤子在“下游”区域的输入倾斜超过临界1。只有在低于一定的临界缺陷强度时,才可能产生稳定的弥散冲击波。

英文摘要:

We study generation of two-dimensional dispersive shock waves and oblique dark solitons upon interaction of tilted plane waves with negative refractive index defects embedded into defocusing material with linear gain and two-photon absorption. Different evolution regimes are encountered including the formation of well-localized disturbances for input tilts below critical one, and generation of extended shock waves containing multiple intensity oscillations in the "upstream" region and gradually vanishing oblique dark solitons in "downstream" region for input tilts exceeding critical one. The generation of stable dispersive shock waves is possible only below certain critical defect strength.

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