Non-linear doppler shift of the plasmon resonance in a grating-coupled drifting 2 deg
Non-linear doppler shift of the plasmon resonance in a grating-coupled drifting 2 deg
复制标题
光栅耦合漂移 2 度时等离子体共振的非线性多普勒频移
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
H. Hughes
中科院分区：
文献类型：
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作者：
H. Hughes
对远红外二维电子气 (2DEG) 的等离激元共振进行了实验和计算研究。目的是研究横向漂移 2DEG 的影响，即赋予电子在电荷片平面中的净速度。 2DEG 漂移效应的最简单描述是用等离子体频率的多普勒频移来描述。对于等离激元波矢 kx 和漂移速度 vd 平行的情况，有两种等离激元模式（相对于漂移向上和向下行进），它们的多普勒频移等离激元频率为（ coo 是静止 2DEG 中的等离激元频率）：
Experimental and computational investigations of the plasmon resonances of a two dimensionalelectron gas (2DEG) in the far-infrared have been performed. The object was to study the effects oflaterally drifting the 2DEG, that is giving the electrons a net velocity in the plane of the charge sheet. Thesimplest description of the effect of drifting the 2DEG is in terms of a Doppler shift in the plasmonfrequency . For the case of the plasmon wavevector kx and the drift velocity vd being parallel, there aretwo plasmon modes (travelling up and down stream with respect to the drift) and their Doppler shiftedplasmon frequencies are ( coo being the plasmon frequency in a stationary 2DEG):