论文标题
活性石墨烯等于漂移偏置
Active graphene plasmonics with a drift-current bias
论文作者
论文摘要
从理论上讲，我们证明了由硅碳化物底物上的漂移偏置石墨烯片形成的系统实现损失补偿和等离子体扩增。石墨烯片的主动响应植根于石墨烯等离子的光学泵送，并带有流载流子提供的增益。所提出的系统是与漂流电子共同传播的等离子的光学放大器，并且是反向传播等离子体的强衰减器。此外，我们表明，通过连接系统的输入和输出获得的反馈，例如，作为环形石墨烯 - 硅碳化物纳米索子，结合了漂流电子提供的光学增益，可能会导致assasing。
We theoretically demonstrate that a system formed by a drift-current biased graphene sheet on a silicon carbide substrate enables loss compensation and plasmon amplification. The active response of the graphene sheet is rooted in the optical pumping of the graphene plasmons with the gain provided by the streaming current carriers. The proposed system behaves as an optical amplifier for the plasmons co-propagating with the drifting electrons and as a strong attenuator for the counter-propagating plasmons. Furthermore, we show that the feedback obtained by connecting the input and output of the system, e.g., as a ring-shaped graphene - silicon carbide nanoresonator, combined with the optical gain provided by the drifting electrons, may lead to spasing.
