窄禁带HgTe/CdHgTe量子阱中等离子体激元LO模的受激发射
Stimulated emission of plasmon-LO mode in narrow gap HgTe/CdHgTe quantum wells
摘要:
我们计算了等离子体激元LO模的色散,同时考虑了电子极化率的空间色散。结果表明,在(013)面上生长的6 nm宽的HgTe/CdTe量子阱和5 nm宽的HgTe/Cd_(0.7)Hg_(0.3)Te量子阱中,在GaAs的Reststrahlen带对应的频率范围内,等离子体LO模的受激发射是可能的。由于等离子体激元-LO模式的色散定律的各向异性,[03-1]方向看起来对于产生是最佳的。
英文摘要:
We calculate the dispersion of the plasmon-LO modes taking into account the spatial dispersion of the electronic polarizability. It is shown that stimulated emission of the plasmon-LO mode is possible in the frequency range corresponding to the Reststrahlen band of GaAs both in a 6 nm wide HgTe/CdTe QW and in a 5 nm wide HgTe/Cd0.7Hg0.3Te QW grown on the (013) plane. Due to the anisotropy of the dispersion law for the plasmon-LO mode, the [03-1] direction appears to be optimal for generation.
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