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首页> 外文期刊>Journal of Electromagnetic Analysis and Applications >Comparison of Excitation of Acoustic-Electromagnetic Wave in Piezoelecric Crystal and Crystal with Potential of Deformation
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Comparison of Excitation of Acoustic-Electromagnetic Wave in Piezoelecric Crystal and Crystal with Potential of Deformation

机译：压电晶体和具有变形潜能的晶体中的电磁波激发的比较

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In this article, the comparison of excitation in high frequencies of acoustic-electromagnetic wave in piezoelecric crystal and crystal with potential of deformation GaAs is investigating. Possible mechanisms of coupling different hybrid waves are the piezoeffect and the deformation potential. As a model it is analyzing a film of crystal places between two symmetrical substrates with the other materials without an acoustic contact. This film includes 2D electron gas with a high negative differential conductivity and uniform initial distribution of electrons. The hybrid acoustic-electromagnetic wave and hybrid space charge wave interact. Amplification of space charge wave takes place due to negative differential conductivity in GaAs. This amplification of space charge waves is causing the amplification of acoustic-electromagnetic wave. It is to show that the symmetric modes, emerging as transverse ones, interact more effectively with the space charge waves. Another important result is the following: at the frequencies f ≈ 10 GHz, the excitation efficiency of acoustic-electromagnetic wave with transverse displacement due to piezoeffect is more effective, but at higher frequencies, the deformation potential is dominating.
机译：本文研究了压电晶体和具有GaAs变形潜力的晶体在高频电磁波中的激发。耦合不同混合波的可能机制是压电效应和变形势。作为模型，它正在分析两个对称基板之间的晶体膜以及其他材料之间的无声接触。该膜包括具有高的负微分电导率和均匀的电子初始分布的二维电子气。混合声电磁波和混合空间电荷波相互作用。由于GaAs的负差分电导率，导致空间电荷波的放大。空间电荷波的这种放大导致声电磁波的放大。这表明，对称模式以横向模式出现，可以更有效地与空间电荷波相互作用。另一个重要的结果如下：在频率≈10 GHz时，由于压电效应而引起的具有横向位移的声电磁波的激发效率更有效，但在更高的频率下，变形势占主导地位。

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