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arXiv 1710.08752physics.opticscond-mat.supr-connlin.PS
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超导薄膜中的巨非对称自相位调制

Giant asymmetric self-phase modulation in superconductor thin films

Charles Robson, Fabio Biancalana

摘要:

在光与超导体的耦合过程中,发现在低入射光强下,光脉冲会发生强烈的自相位调制(SPM)。我们发展了一个理论,从含时的金斯堡-朗道(TDGL)方程和基本电动力学的合成,这表明在相互作用中积累的强非线性相位。不寻常的是,SPM的脉冲在这个系统中被发现是高度不对称的,产生强烈的红移光谱时,与超导薄膜相互作用,它的发展在短短几个纳米的传播。在本文中,我们提出的理论结果和模拟太赫兹制度,双曲正割和超高斯形脉冲。

英文摘要:

Self-phase modulation (SPM) of light pulses is found to occur strongly, at low incident intensities, in the coupling of light with superconductors. We develop a theory from a synthesis of the time-dependent Ginzburg-Landau (TDGL) equation and basic electrodynamics which shows the strongly non-linear phase accumulated in the interaction. Unusually, the SPM of the pulse in this system is found to be highly asymmetric, producing a strongly redshifted spectrum when interacting with a superconducting thin film, and it develops in just a few nanometers of propagation. In this paper we present theoretical results and simulations in the THz regime, for both hyperbolic secant and supergaussian-shaped pulses.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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