Non-Hermitian Linear Electrooptic Effect in 3D materials
arxiv(2024)
摘要
Here, we present an in-depth theoretical analysis of the linear electrooptic
effect in low-symmetry three-dimensional (3D) conductive materials with large
Berry curvature dipoles. Our study identifies two distinct kinetic
contributions to the linear electrooptic effect: a gyrotropic Hermitian
(conservative) piece and a non-Hermitian term that can originate optical gain.
We concentrate on the study of 3D materials belonging to the 32 (D_3) point
group subject to a static electric bias along the trigonal axis. Our
investigation shows that doped trigonal tellurium has promising properties,
with its gyrotropic electrooptic response offering the potential for realizing
electrically-biased electromagnetic isolators and inducing significant optical
dichroism. Most notably, it is demonstrated that under sufficiently large
static electric bias, tellurium's non-Hermitian electrooptic response may lead
to optical gain. Using first-principles calculations, it is shown that n-doped
tellurium is particularly promising, as it can host significantly larger Berry
curvature dipoles than the more common p-doped tellurium.
更多查看译文
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要