论文标题
六角形晶体中的混合光学模式
Hybrid Optical Modes in Hexagonal Crystals
论文作者
论文摘要
在纳米结构电子设备中，众所周知，组成型半导体晶体中的光学晶格波必须在界面处遵守机械和电边界条件。在这里，用于立方晶体建立的杂化光学模式的理论应用于六边形晶体。通常，混合动力车是纵向偏振（LO）模式，接口模式（如果）和模式接口的线性组合。注意到，这些晶体的介电和弹性各向异性为电 - 光子相互作用的评估带来了显着的并发症。我们指出的是，在不需要极高准确性的情况下，可以使用立方近似值。强调了晶格分散的关键作用。在极端的长波长极限中，在晶格分散不重要的情况下，极性杂种由LO组件和仅IF组成组成。在他的情况下，障碍物没有诱导任何领域，也没有遥控效应。
In nanostructure electronic devices, it is well-known that the optical lattice waves in the constituent semiconductor crystals have to obey both mechanical and electrical boundary conditions at an interface. The theory of hybrid optical modes, established for cubic crystals, is here applied to hexagonal crystals. In general, the hybrid is a linear combination of a longitudinally-polarized (LO) mode, an interface mode (IF), and an interface TO mode. It is noted that the dielectric and elastic anisotropy of these crystals add significant complications to the assessment of the electro-phonon interaction. We point out that, where extreme accuracy is not needed, a cubic approximation is available. The crucial role of lattice dispersion is emphasised. In the extreme long-wavelength limit, where lattice dispersion is unimportant, the polar optical hybrid consists of an LO component plus an IF component only. In his case no fields are induced in the barrier, and there are no remote-phonon effects.
