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arXiv 0904.4082physics.opticsphysics.class-ph
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普通半导体中的特殊非线性光学

Extraordinary nonlinear optics in ordinary semiconductors

N. Akozbek, V. Roppo, M. A. Vincenti, J. V. Foreman, M. J. Bloemer, J. W. Haus, M. Scalora

摘要:

我们用数值方法证明了在紫外和极端紫外频率下,在典型半导体的介电常数为负的光谱区域中,半导体中锁相谐波脉冲的吸收、光学透明度和反常动量态的抑制。我们表明,所产生的谐波信号可以通过大块金属介质传播,而不会被吸收作为一个结果的泵和它的谐波之间的相位锁定机制。这些发现可能在非线性光学中开辟新的领域,并且特别与非线性负折射率超材料和纳米等离子体激元学的新兴领域相关,特别是在超快脉冲领域。

英文摘要:

We numerically demonstrate inhibition of absorption, optical transparency, and anomalous momentum states of phase locked harmonic pulses in semiconductors, at UV and extreme UV frequencies, in spectral regions where the dielectric constant of typical semiconductors is negative. We show that a generated harmonic signal can propagate through a bulk metallic medium without being absorbed as a result of a phase locking mechanism between the pump and its harmonics. These findings may open new regimes in nonlinear optics and are particularly relevant to the emerging fields of nonlinear negative index meta-materials and nano-plasmonics, especially in the ultrafast pulse regime.

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