The wurtzite phase catalyst-free InAs nanowires were investigated under femtosecond laser pulse photoexcitations. It was found that the THz radiation emission mechanisms depend on an exciting laser beam polarization, namely, the plasma oscillations for perpendicular to nanowire optical electric fields, and the ballistically moving carrier separation for the parallel polarization fields. The energetic distance between Γ 7c and Γ 8c conduction bands was experimentally determined to be 0.5 eV.

中文翻译：

---

无纤锌矿相催化剂的InAs纳米线的脉冲THz发射

在飞秒激光脉冲光激发下研究了无纤锌矿相催化剂的InAs纳米线。已经发现，太赫兹辐射发射机理取决于激发的激光束偏振，即垂直于纳米线光电场的等离子体振荡，以及平行偏振场的弹道运动载流子分离。通过实验确定Γ7c和Γ8c导带之间的能量距离为0.5 eV。